Substituted 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine derivatives as casein kinase 1 d/e inhibitors

ABSTRACT

The invention provides compounds of Formula (I): 
     
       
         
         
             
             
         
       
     
     and pharmaceutically acceptable salts thereof. The compounds of Formula (I) inhibit protein kinase activity thereby making them useful as anticancer agents.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is entitled to priority pursuant to 35 U.S.C. §119(e)to U.S. provisional patent application No. 61/904,116, filed on Nov. 14,2013, which is incorporated herein in its entirety.

FIELD OF THE INVENTION

The invention relates to novel substituted pyrazoles useful as proteinkinase inhibitors. This invention also relates to methods of using thecompounds in the treatment of proliferative and other types of diseasesand to pharmaceutical compositions containing the compounds.

BACKGROUND OF THE INVENTION

The invention relates to substituted pyrazole compounds which inhibitprotein kinase enzymes, compositions which contain protein kinaseinhibiting compounds and methods of using inhibitors of protein kinaseenzymes to treat diseases which are characterized by an overexpressionor upregulation of protein kinases. Protein kinases mediateintracellular signal transduction by affecting a phosphoryl transferfrom a nucleoside triphosphate to a protein acceptor that is involved ina signaling pathway. There are a number of kinases and pathways throughwhich extracellular and other stimuli cause a variety of cellularresponses to occur inside the cell. An extracellular stimulus may affectone or more cellular responses related to cell growth, migration,differentiation, secretion of hormones, activation of transcriptionfactors, muscle contraction, glucose metabolism, control of proteinsynthesis and regulation of cell cycle.

Many diseases are associated with abnormal cellular responses triggeredby protein kinase-mediated events. These diseases include autoimmunediseases, inflammatory diseases, neurological and neurodegenerativediseases, cancer, cardiovascular diseases, allergies and asthma,Alzheimer's disease or hormone-related diseases. Accordingly, there hasbeen a substantial effort in medicinal chemistry to find protein kinaseinhibitors that are effective as therapeutic agents.

Serine/threonine kinases are a class of protein kinases that are amongthe most promising drug targets for future small molecule inhibitors.Inhibition of serine/threonine kinases is likely to have relevance tothe treatment of cancer, diabetes and a variety of inflammatorydisorders. The successful development of GLEEVEC® as a Bcr/Abl proteinkinase inhibitor has provided further evidence that protein kinases arevalid drug targets for potential cancer therapies.

Casein kinase 1 (CK1) belongs to the serine/threonine kinase family. Inmammals, the enzyme exists in seven isozymic forms: α, β, γ1, γ2, γ3, δ,and ε. By phosphorylating different substrate proteins, these isoformsare able to activate, inactivate, stabilize, or destabilize thefunctions of the proteins, regulating the functions of various types ofdifferent organisms. For example, a tumor suppressor factor p53 and anoncogene mdm2, which are both important proteins for controllingabnormal cell growth, are substrates of casein kinase 1.

Mammalian casein kinase 1δ and casein kinase 1ε are key regulators ofdiverse cellular growth and survival processes including Wnt signaling,DNA repair and circadian rhythms. They have a kinase domain that issimilar to those of other isoforms. However, the N-terminal andC-terminal domains thereof are different from those of other isoforms.The C-terminal domain has a plurality of autophosphorylation sites, andit is considered to be involved in regulation of autoenzyme activity.Phosphorylation of p53 by casein kinase 1δ or casein kinase 1ε leads toa consequent change in the interaction between p53 and mdm2. It has alsobeen known that casein kinase 1ε or casein kinase 1δ is involved in aregulatory protein associated with the formation of a spindle as acentral body during cell division, and that the casein kinase 1δ orcasein kinase 1ε is involved in apoptosis mediated by TRAIL (tumornecrosis factor-related apoptosis inducing factor) and Fas. It has beenfurther reported that inhibition of casein kinase 1ε or casein kinase 1δby a nonselective casein kinase 1 inhibitory compound IC261 reducespancreatic tumor cell growth in vitro and in vivo (Brockschmidt et al.,Gut, 57(6):799-806 (2008)). Hence, a medicament inhibiting the functionof casein kinase 1δ or casein kinase 1ε would be expected to exertimportant phenotypic and therapeutic effects broadly in development anddisease, especially cancer.

The present invention relates to a new class substituted pyrazoles foundto be effective in inhibiting casein kinase 1δ or casein kinase 1ε.These novel compounds are provided to be useful as pharmaceuticals withdesirable stability, bioavailability, therapeutic index and toxicityvalues that are important to their drugability.

SUMMARY OF THE INVENTION

The invention is directed to substituted pyrazole compounds of Formulae(I)-(V) or stereoisomers, tautomers, pharmaceutically acceptable salts,solvates or prodrugs thereof, which inhibit protein kinase enzymes,especially protein kinase CK1 for the treatment of cancer.

The present invention also provides processes and intermediates formaking the compounds of the present invention or stereoisomers,tautomers, pharmaceutically acceptable salts, solvates, or prodrugsthereof.

The present invention also provides pharmaceutical compositionscomprising a pharmaceutically acceptable carrier and at least one of thecompounds of the present invention or stereoisomers, tautomers,pharmaceutically acceptable salts, solvates, or prodrugs thereof.

The present invention also provides methods for inhibiting the activityof protein kinase CK1 comprising administering to a host in need of suchtreatment a therapeutically effective amount of at least one of thecompounds of the present invention or stereoisomers, tautomers,pharmaceutically acceptable salts, solvates, or prodrugs thereof.

The present invention also provides methods for treating cancerscomprising administering to a host in need of such treatment atherapeutically effective amount of at least one of the compounds of thepresent invention or stereoisomers, tautomers, pharmaceuticallyacceptable salts, solvates, or prodrugs thereof. The present inventionalso provides the compounds of the present invention or stereoisomers,tautomers, pharmaceutically acceptable salts, solvates, or prodrugsthereof, for use in therapy.

The present invention also provides the use of the compounds of thepresent invention or stereoisomers, tautomers, pharmaceuticallyacceptable salts, solvates, or prodrugs thereof, in preparing amedicament for the treatment of cancer in a human patient, particularlya cancer receptive to treatment via inhibition of the CK1 enzyme.

These and other features of the invention will be set forth in theexpanded form as the disclosure continues.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides for novel substituted pyrazole compounds usefulas therapeutic agents, pharmaceutical compositions employing such novelcompounds and for methods of using such compounds.

In accordance with the invention, there are disclosed compounds ofFormula (I) including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof,

wherein:

-   X is independently selected from O and NH;-   R₁ is independently selected from carbocyclyl substituted with 1-5    R₅, and heterocyclyl comprising carbon atoms and 1 to 3 heteroatoms    selected from N, NR₄, O, S, and substituted with 1-5 R₅;-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, NR₆, O, S, and substituted with 1-8 R₇;-   R_(3a), R_(3b), R_(3c), R_(3d), R_(3e) and R_(3f) are independently    selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,    —C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;-   alternatively, R_(3a) and R_(3b), or R_(3e) and R_(3d), or R_(3e)    and R_(3f), together with the carbon atom to which they are both    attached form a spiral carbocyclic or heterocyclic ring comprising    carbon atoms and 1 to 4 heteroatoms selected from N, O, S, each    substituted with 1-5 R₈;-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-5 R₈;-   R₄ is independently selected from H, C₁₋₄ alkyl substituted with 0-3    R_(e), —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(a)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(a)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₆ is independently selected from H, —C(═O)R_(b), —CO(═O)R_(b),    —S(O)_(p)R_(c), C₁₋₆ alkyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),    —C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),    —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted    with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with    0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5    R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆ alkenyl,    C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)-aryl,    —(CH₂)_(r)-heterocyclyl, CO₂H, —(CH₂)_(r)OR_(f), SR_(f), and    —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl optionally substituted with F, Cl, Br, C₃₋₆ cycloalkyl, and    phenyl, or R_(f) and R_(f) together with the nitrogen atom to which    they are both attached form a heterocyclic ring optionally    substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In another aspect, there are disclosed compounds of Formula (II)including enantiomers, diastereomers, tautomers, pharmaceuticallyacceptable salts, prodrugs, hydrates, or solvates thereof,

wherein:

-   R₁ is independently selected from aryl substituted with 1-4 R₅, and    5- to 12-membered heteroaryl comprising carbon atoms and 1 to 3    heteroatoms selected from N, NR₄, O, S, and substituted with 1-4 R₅;-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, NR₆, O, S, and substituted with 1-8 R₇;-   R_(3a), R_(3b), R_(3c), and R_(3d) are independently selected from    H, CN, C₁₋₄alkyl substituted with 1-3 R₈, —C(═O)OR_(b),    —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;    -   alternatively, R_(3a) and R_(3b), or R_(3c) and R_(3d), or        R_(3e) and R_(3f), together with the carbon atom to which they        are both attached form a spiral carbocyclic or heterocyclic ring        comprising carbon atoms and 1 to 4 heteroatoms selected from N,        O, S, each substituted with 0-5 R_(e);-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 0-5 R_(e);-   R₄ is independently selected from H and C₁₋₄ alkyl substituted with    0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₆ is independently selected from H, —C(═O)R_(b), —CO(═O)R_(b),    —S(O)_(p)R_(c), C₁₋₆ alkyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),    —C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),    —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted    with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with    0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5    R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆ alkenyl,    C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, CO₂H, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In another embodiment, there are disclosed compounds of Formula (II)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R₁ is independently selected from aryl, pyridyl, pyrimidinyl,    pyrazinyl, pyridazinyl, triazinyl, furyl, thienyl, imidazolyl,    thiazolyl, indolyl, oxazolyl, isoxazolyl, pyrazolyl, triazolyl,    tetrazolyl, indazolyl, 1,2,4-thiadiazolyl, isothiazolyl, quinolinyl,    isoquinolinyl, each substituted with 1-4 R₄ and R₅;-   R₄, at each occurrence, is independently selected from H and C₁₋₄    alkyl substituted with 0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —S(O)_(p)R_(c), —CN, —OR_(b), —(CH₂)_(r)C(═O)R_(b),    —(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),    —(CH₂)_(r)NHC(═O)R_(b), —(CH₂)_(r)NHC(═O)OR_(b),    —(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NHC(═O)NR_(a)R_(a),    —(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NHS(O)₂NR_(a)R_(a), —(CH₂)_(r)NHS(O)₂R_(c),    (CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆ alkenyl,    C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, CO₂H, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4;    and other variables are as defined in Formula (II) above.

In another embodiment, there are disclosed compounds of Formula (II)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R₁ is independently selected from

-   R₄, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —S(O)_(p)R_(c), —CN, —OR_(b), —(CH₂)_(r)C(═O)R_(b),    —(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),    —(CH₂)_(r)NHC(═O)R_(b), —(CH₂)_(r)NHC(═O)OR_(b),    —(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NHC(═O)NR_(a)R_(a),    —(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NHS(O)₂NR_(a)R_(a), —(CH₂)_(r)NHS(O)₂R_(c),    (CH₂)_(r)—C₃₋₆cycloalkyl, —(CH₂)_(r)-aryl substituted with 0-3    R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆    cycloalkyl, and CO₂H;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4;    and other variables are as defined in Formula (II) above.

In another aspect, there are disclosed compounds of Formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof,

wherein:

-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, NR₆, O, S, and substituted with 1-8 R₇;-   R_(3a), R_(3b), R_(3c), and R_(3d) are independently selected from    H, CN, C₁₋₄alkyl substituted with 1-3 R₈, —C(═O)OR_(b),    —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;-   alternatively, R_(3a) and R_(3b), together with the carbon atom to    which they are both attached form a spiral carbocyclic or    heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, each substituted with 1-5 R₈;-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-5 R₈;-   R₅, at each occurrence, is independently selected from H, C₁₋₄alkyl    substituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),    NR_(a)R_(a), C₃₋₆cycloalkyl, aryl substituted with 0-3 R_(e), and    heterocyclyl substituted with 0-3 R_(e);-   R₆ is independently selected from H, —C(═O)R_(b), —CO(═O)R_(b),    —S(O)_(p)R_(c), C₁₋₆ alkyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),    —C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),    —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted    with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with    0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5    R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In another embodiment, there are disclosed compounds of formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R₂ is

-   R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃,    CH₂OH, CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃,    CH₂OCHF₂, CH₂CN, CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂,    C(CH₃)₂OH, C(CH₃)₂F, C(═O)NH—C₃₋₆cycloalkyl, C(═O)NH-heterocyclyl,    and —CH₂-heterocyclyl, wherein the heterocyclyl is independently    selected from

-   R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂,    CF₃, and C₃₋₆cycloalkyl;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),    NR_(a)R_(a), C₃₋₆cycloalkyl, and aryl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CH₂)_(r)CN, NO₂, —(CH₂)_(r)OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —NR_(a)R_(a), —C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b),    —OC(═O)NR_(a)R_(a), —NHC(═O)NR_(a)R_(a), —C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NHS(O)₂NR_(a)R_(a), —NHS(O)₂R_(c), C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆cycloalkyl substituted with 0-5    R_(e), aryl substituted with 0-5 R_(e), and heterocyclyl substituted    with 0-5 R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆    cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-aryl substituted    with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e),    CO₂H, —(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e), aryl substituted    with 0-5 R_(e), and heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, and    —(CH₂)_(r)—C₃₋₆ cycloalkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4;    and other variables are as defined in Formula (III) above.

In another embodiment, there are disclosed compounds of formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R₂ is

-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, —OC₁₋₄alkyl substituted with 0-5 R_(e), —S(O)₂C₁₋₄alkyl,    —C(═O)R_(b), —NR_(a)R_(a), —C(═O)NR_(a)R_(a), C₁₋₄ alkyl substituted    with 0-5 R_(e), C₃₋₆cycloalkyl substituted with 0-5 R_(e), aryl    substituted with 0-5 R_(e), and heterocyclyl substituted with 0-5    R_(e);-   R_(a), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);    wherein the heterocyclic ring is independently selected from

-    and-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, and    —(CH₂)_(r)—C₃₋₆ cycloalkyl;    and other variables are as defined in Formula (III) above.

In another embodiment, there are disclosed compounds of Formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R₂ is independently selected from

-   R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃,    CH₂OH, CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃,    CH₂OCHF₂, CH₂CN, CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂,    C(CH₃)₂OH, C(CH₃)₂F, C(═O)NH—C₃₋₆cycloalkyl, C(═O)NH-heterocyclyl,    and —CH₂-heterocyclyl, wherein the heterocyclyl is independently    selected from

-   R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂,    CF₃, and C₃₋₆ cycloalkyl;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),    NR_(a)R_(a), C₃₋₆cycloalkyl, and aryl substituted with 0-3 R_(e);-   R_(e), at each occurrence, is independently selected from H, C₁₋₄    alkyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CH₂)_(r)CN, NO₂, —(CH₂)_(r)OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —NR_(a)R_(a), —C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b),    —OC(═O)NR_(a)R_(a), —NHC(═O)NR_(a)R_(a), —C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NHS(O)₂NR_(a)R_(a), —NHS(O)₂R_(c), C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆cycloalkyl substituted with 0-5    R_(e), aryl substituted with 0-5 R_(e), and heterocyclyl substituted    with 0-5 R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆    cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-aryl substituted    with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e),    CO₂H, —(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e), aryl substituted    with 0-5 R_(e), and heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂HC₁₋₆ alkyl, C₂₋₆alkenyl, C₂₋₆ alkynyl, and    —(CH₂)_(r)—C₃₋₆ cycloalkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4;    and other variables are as defined in Formula (III) above.

In another embodiment, there are disclosed compounds of Formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R_(3a) and R_(3b), or R_(3c) and R_(3d), together with the carbon    atom to which they are both attached form a spiral carbocyclic or    heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, each substituted with 1-5 R₈;-   alternatively, R_(3c) and R_(3d), together with the carbon atom to    which they are both attached form a spiral carbocyclic ring    comprising carbon atoms and 1 to 4 heteroatoms selected from N, O,    S, each substituted with 1-5 R₈;    and other variables are as defined in Formula (III) above.

In another aspect, there are disclosed compounds of Formula (IV)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof,

wherein:

-   Ring A is C₃₋₆cycloalkyl or heterocyclyl;-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, O, S, and substituted with 1-8 R₇;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),    NR_(a)R_(a), C₃₋₆cycloalkyl, aryl substituted with 0-3 R_(e), and    heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a),    —C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b),    —OC(═O)NR_(a)R_(a), —NHC(═O)NR_(a)R_(a), —C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), C₁₋₆ alkyl substituted with 0-5 R_(e), aryl    substituted with 0-5 R_(e), and heterocyclyl substituted with 0-5    R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e), aryl substituted    with 0-5 R_(e), and heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, and CO₂H, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, and    —(CH₂)_(r)—C₃₋₆ cycloalkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In another embodiment, there are disclosed compounds of Formula (III)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof, wherein:

-   R_(3a) and R_(3c) together form a carbocyclic or heterocyclic ring    comprising carbon atoms and 1 to 4 heteroatoms selected from N, O,    S, wherein the carbocyclic or heterocyclic ring is substituted with    1-5 R₈; and-   R_(3b) and R_(3d) are independently selected from H and C₁₋₄alkyl;    and other variables are as defined in Formula (III) above.

In another aspect, there are disclosed compounds of Formula (V)including enantiomers, diastereomers, tautomers,pharmaceutically-acceptable salts, prodrugs, hydrates, or solvatesthereof,

wherein:

-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, O, S, and substituted with 1-8 R₇;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),    NR_(a)R_(a), C₃₋₆cycloalkyl, aryl substituted with 0-3 R_(e), and    heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a),    —C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b),    —OC(═O)NR_(a)R_(a), —NHC(═O)NR_(a)R_(a), —C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), C₁₋₆ alkyl substituted with 0-5 R_(e), aryl    substituted with 0-5 R_(e), and heterocyclyl substituted with 0-5    R_(e);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e), aryl substituted    with 0-5 R_(e), and heterocyclyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, and    —(CH₂)_(r)—C₃₋₆ cycloalkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

All aspects of the compounds, including individual variable definitions,may be combined with other aspects to form additional compounds. Forexample, in one embodiment of Formula (I), R₁ is phenyl, R₂ issubstituted aryl, and R₃ is hydrogen. In another embodiment, R₁ isheteroaryl, R₂ is heteroaryl, and R₃ is substituted alkyl.

In certain embodiments, the present invention includes compounds ofFormula (III), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is phenyl substituted with 1-4 R₅;-   R₂ is aryl substituted with 1-5 R₇;-   R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃,    CH₂OH, CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃,    CH₂OCHF₂, CH₂CN, CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂,    C(CH₃)₂OH, and C(CH₃)₂F;-   R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂,    CF₃, and C₃₋₆ cycloalkyl;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —(CR_(d)R_(d))_(r)NR_(a)R_(a), —(CR_(d))_(r)C(═O)NR_(a)R_(a),    —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a),    —NR_(a)C(═O)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆    alkyl substituted with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl    substituted with 0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl    substituted with 0-5 R_(e);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (III), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is phenyl substituted with 1-4 R₅;-   R₂ is aryl substituted with 1-5 R₇;-   R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃,    CH₂OH, CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃,    CH₂OCHF₂, CH₂CN, CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂,    C(CH₃)₂OH, and C(CH₃)₂F;-   R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂,    CF₃, and C₃₋₆ cycloalkyl;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    (CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, —OC₁₋₄alkyl substituted with 0-5 R_(e), —S(O)₂C₁₋₄alkyl,    —C(═O)R_(b), —NR_(a)R_(a), —C(═O)NR_(a)R_(a), C₁₋₄ alkyl substituted    with 0-5 R_(e), C₃₋₆cycloalkyl substituted with 0-5 R_(e), aryl    substituted with 0-5 R_(e), and heterocyclyl substituted with 0-5    R_(e);-   R_(a), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);    wherein the heterocyclic ring is independently selected from

-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (III), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is phenyl substituted with 1-4 R₅;-   R₂ is heteroaryl substituted with 1-5 R₇;-   R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃,    CH₂OH, CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃,    CH₂OCHF₂, CH₂CN, CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂,    C(CH₃)₂OH, and C(CH₃)₂F;-   R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂,    CF₃, and C₃₋₆ cycloalkyl;-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    ═O, CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —(CR_(d)R_(d))_(r)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a),    —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a),    —NR_(a)C(═O)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆    alkyl substituted with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl    substituted with 0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl    substituted with 0-5 R_(e);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (III), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is phenyl substituted with 1-4 R₅;-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, O, S, and substituted with 1-8 R₇;-   R_(3a) and R_(3b), or R_(3c) and Rd, together with the carbon atom    to which they are both attached form a spiral carbocyclic or    heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, each substituted with 1-5 R₈;-   R₄ is independently selected from H and C₁₋₄ alkyl substituted with    0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    —(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),    —C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),    —(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),    —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted    with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with    0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5    R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and R_(a)    together with the nitrogen atom to which they are both attached form    a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆ alkenyl,    C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, CO₂H, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H,    C₁₋₅alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together    with the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (II), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is heteroaryl comprising carbon atoms and 1 to 3 heteroatoms    selected from N, NR₄, O, S, wherein the heteroaryl is substituted    with 1-5 R₅ and selected from thiazolyl, oxazolyl, pyrazolyl,    triazolyl, tetrazolyl, thiadiazolyl, isoxazolyl, imidazolyl,    pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, indolyl, indazolyl,    isoindolyl, indolinyl, isoindolinyl, benzimidazolyl, benzothiazolyl,    benzotriazolyl, quinolinyl, and isoquinolinyl;-   R₂ is independently selected from aryl substituted with 1-8 R₇ and    heteroaryl comprising carbon atoms and 1 to 4 heteroatoms selected    from N, NR₆, O, S, and substituted with 1-8 R₇;-   R_(3a), R_(3b), R_(3c), R_(3d), R_(3e) and R_(3f) are independently    selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,    —C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;-   alternatively, R_(3a) and R_(3b), or R_(3c) and R_(3d), or R_(3e)    and R_(3f), together with the carbon atom to which they are both    attached form a spiral carbocyclic or heterocyclic ring comprising    carbon atoms and 1 to 4 heteroatoms selected from N, O, S, each    substituted with 1-5 R₈;-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-5 R₈;-   R₄ is independently selected from H and C₁₋₄ alkyl substituted with    0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —(CR_(d)R_(d))_(r)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a),    —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a),    —NR_(a)C(═O)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆    alkyl substituted with 0-5 R_(e), —(CR_(d)R_(d))_(r)C₃₋₆carbocyclyl    substituted with 0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl    substituted with 0-5 R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (II), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is heteroaryl comprising carbon atoms and 1 to 3 heteroatoms    selected from N, NR₄, O, S, wherein the heteroaryl is substituted    with 1-5 R₅ and selected from thiazolyl, oxazolyl, pyrazolyl,    triazolyl, tetrazolyl, thiadiazolyl, isoxazolyl, imidazolyl,    pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, indolyl, indazolyl,    isoindolyl, indolinyl, isoindolinyl, benzimidazolyl, benzothiazolyl,    benzotriazolyl, quinolinyl, and isoquinolinyl;-   R₂ is aryl substituted with 1-5 R₇;-   R_(3a), R_(3b), R_(3c), R_(3d), R_(3e) and R_(3f) are independently    selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,    —C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;-   alternatively, R_(3a) and R_(3b), or R_(3c) and R_(3d), or R_(3e)    and R_(3f), together with the carbon atom to which they are both    attached form a spiral carbocyclic or heterocyclic ring comprising    carbon atoms and 1 to 4 heteroatoms selected from N, O, S, each    substituted with 1-5 R₈;-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-5 R₈;-   R₄ is independently selected from H and C₁₋₄ alkyl substituted with    0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —(CR_(d)R_(d))_(r)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a),    —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a),    —NR_(a)C(═O)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆    alkyl substituted with 0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl    substituted with 0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl    substituted with 0-5 R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H,    C₁₋₅alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together    with the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

In certain embodiments, the present invention includes compounds ofFormula (II), or stereoisomers, tautomers, pharmaceutically acceptablesalts, solvates, or prodrugs thereof, wherein:

-   R₁ is heteroaryl comprising carbon atoms and 1 to 3 heteroatoms    selected from N, NR₄, O, S, wherein the heteroaryl is substituted    with 1-5 R₅ and selected from thiazolyl, oxazolyl, pyrazolyl,    triazolyl, tetrazolyl, thiadiazolyl, isoxazolyl, imidazolyl,    pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, indolyl, indazolyl,    isoindolyl, indolinyl, isoindolinyl, benzimidazolyl, benzothiazolyl,    benzotriazolyl, quinolinyl, and isoquinolinyl;-   R₂ is heteroaryl comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-8 R₇;-   R_(3a), R_(3b), R_(3c), R_(3d), R_(3e) and R_(3f) are independently    selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,    —C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),    —NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈,    and —(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈;-   alternatively, R_(3a) and R_(3b), or R_(3c) and R_(3d), or R_(3e)    and R_(3f), together with the carbon atom to which they are both    attached form a spiral carbocyclic or heterocyclic ring comprising    carbon atoms and 1 to 4 heteroatoms selected from N, O, S, each    substituted with 1-5 R₈;-   alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form    a heterocyclic ring comprising carbon atoms and 1 to 4 heteroatoms    selected from N, O, S, and substituted with 1-5 R₈;-   R₄ is independently selected from H and C₁₋₄ alkyl substituted with    0-3 R_(e);-   R₅, at each occurrence, is independently selected from H, C₁₋₄ alkyl    substituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),    —(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),    —(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a),    —(CH₂)_(r)C(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)R_(b),    —(CH₂)_(r)NR_(a)C(═O)OR_(b), —(CH₂)_(r)OC(═O)NR_(a)R_(a),    —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a), —(CH₂)_(r)C(═O)OR_(b),    —(CH₂)_(r)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a),    —(CH₂)_(r)NR_(a)S(O)₂R_(c), (CH₂)_(r)-carbocyclyl substituted with    0-3 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e);-   R₆ is independently selected from H, —C(═O)R_(b), —CO(═O)R_(b),    —S(O)_(p)R_(c), C₁₋₆ alkyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R₇, at each occurrence, is independently selected from H, F, Cl, Br,    ═O, CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b),    —(CR_(d)R_(d))_(r)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a),    —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a),    —NR_(a)C(═O)NR_(a)R_(a), —(CR_(d)R_(d))_(r)C(═O)OR_(b),    —S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆    alkyl substituted with 0-5 R_(e), —(CR_(d)R_(d))_(r)C₃₋₆carbocyclyl    substituted with 0-5 R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl    substituted with 0-5 R_(e);-   R₈, at each occurrence, is independently selected from H, F, Cl, Br,    CN, C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆    alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e),    —(CH₂)_(r)-aryl substituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl    substituted with 0-5 R_(e), CO₂H, —(CH₂)_(r)OR_(b), and    —(CH₂)_(r)NR_(a)R_(a);-   R_(a), at each occurrence, is independently selected from H, CN,    C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with    0-5 R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) and    R_(a) together with the nitrogen atom to which they are both    attached form a heterocyclic ring substituted with 0-5 R_(e);-   R_(b), at each occurrence, is independently selected from H, C₁₋₆    alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5    R_(e), C₂₋₆ alkynyl substituted with 0-5 R_(e),    —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e), and    —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e);-   R_(c), at each occurrence, is independently selected from C₁₋₆ alkyl    substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5 R_(e),    C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, and    heterocyclyl;-   R_(d), at each occurrence, is independently selected from H and    C₁₋₄alkyl substituted with 0-5 R_(e);-   R_(e), at each occurrence, is independently selected from F, Cl, Br,    CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆    alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, —(CH₂)_(r)OR_(f),    SR_(f), and —(CH₂)_(r)NR_(f)R_(f);-   R_(f), at each occurrence, is independently selected from H, C₁₋₅    alkyl, C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with    the nitrogen atom to which they are both attached form a    heterocyclic ring optionally substituted with C₁₋₄alkyl;-   p, at each occurrence, is independently selected from zero, 1, and    2; and-   r, at each occurrence, is independently selected from zero, 1, 2, 3,    and 4.

It should further be understood that solvates (e.g., hydrates) of thecompounds of Formulae (I)-(V) are also within the scope of theinvention. Methods of solvation are generally known in the art. Theinventive compounds may either be in the free or hydrate form.

Compounds of this invention may have one or more asymmetric centers.Unless otherwise indicated, all chiral (enantiomeric and diastereomeric)and racemic forms of compounds of the present invention are included inthe present invention. Many geometric isomers of olefins, C═N doublebonds, and the like can also be present in the compounds, and all suchstable isomers are contemplated in the present invention. Cis- andtrans-geometric isomers of the compounds of the present invention aredescribed and may be isolated as a mixture of isomers or as separatedisomeric forms. The present compounds can be isolated in opticallyactive or racemic forms. It is well known in the art how to prepareoptically active forms, such as by resolution of racemic forms or bysynthesis from optically active starting materials. All chiral,(enantiomeric and diastereomeric) and racemic forms and all geometricisomeric forms of a structure are intended, unless the specificstereochemistry or isomer form is specifically indicated. When nospecific mention is made of the configuration (cis, trans or R or S) ofa compound (or of an asymmetric carbon), then any one of the isomers ora mixture of more than one isomer is intended. The processes forpreparation can use racemates, enantiomers, or diastereomers as startingmaterials. All processes used to prepare compounds of the presentinvention and intermediates made therein are considered to be part ofthe present invention. When enantiomeric or diastereomeric products areprepared, they can be separated by conventional methods, for example, bychromatography or fractional crystallization. Compounds of the presentinvention, and salts thereof, may exist in multiple tautomeric forms, inwhich hydrogen atoms are transposed to other parts of the molecules andthe chemical bonds between the atoms of the molecules are consequentlyrearranged. It should be understood that all tautomeric forms, insofaras they may exist, are included within the invention.

DEFINITIONS

The following are definitions of terms used in this specification andappended claims. The initial definition provided for a group or termherein applies to that group or term throughout the specification andclaims, individually or as part of another group, unless otherwiseindicated.

In accordance with a convention used in the art,

is used in structural formulas herein to depict the bond that is thepoint of attachment of the moiety or substituent to the core or backbonestructure.

A dash “-” that is not between two letters or symbols is used toindicate a point of attachment for a substituent. For example, —CONH₂ isattached through the carbon atom.

As used herein, the term “alkyl” or “alkylene” is intended to includeboth branched and straight-chain saturated aliphatic hydrocarbon groupshaving the specified number of carbon atoms. For example, “C₁₋₁₀ alkyl”(or alkylene), is intended to include C₁, C₂, C₃, C₄, C₅, C₆, C₇, C₈,C₉, and C₁₀ alkyl groups. Additionally, for example, “C₁-C₆ alkyl”denotes alkyl having 1 to 6 carbon atoms. Alkyl groups can beunsubstituted or substituted so that one or more of its hydrogens arereplaced by another chemical group. Example alkyl groups include, butare not limited to, methyl (Me), ethyl (Et), propyl (e.g., n-propyl andisopropyl), butyl (e.g., n-butyl, isobutyl, t-butyl), pentyl (e.g.,n-pentyl, isopentyl, neopentyl), and the like.

“Haloalkyl” is intended to include both branched and straight-chainsaturated aliphatic hydrocarbon groups having the specified number ofcarbon atoms, substituted with 1 or more halogen. Examples of haloalkylinclude, but are not limited to, fluoromethyl, difluoromethyl,trifluoromethyl, trichloromethyl, pentafluoroethyl, pentachloroethyl,2,2,2-trifluoroethyl, heptafluoropropyl, and heptachloropropyl. Examplesof haloalkyl also include “fluoroalkyl” which is intended to includeboth branched and straight-chain saturated aliphatic hydrocarbon groupshaving the specified number of carbon atoms, substituted with 1 or morefluorine atoms.

The term “halogen” or “halo” refers to fluorine (F), chlorine (Cl),bromine (Br) and iodine.

“Haloalkoxy” or “haloalkyloxy” represents a haloalkyl group as definedabove with the indicated number of carbon atoms attached through anoxygen bridge. For example, “C₁₋₆ haloalkoxy” is intended to include C₁,C₂, C₃, C₄, C₅, and C₆ haloalkoxy groups. Examples of haloalkoxyinclude, but are not limited to, trifluoromethoxy,2,2,2-trifluoroethoxy, pentafluorothoxy, and the like. Similarly,“haloalkylthio” or “thiohaloalkoxy” represents a haloalkyl group asdefined above with the indicated number of carbon atoms attached througha sulphur bridge; for example trifluoromethyl-S—, pentafluoroethyl-S—,and the like.

As used herein, “carbocycle”, “carbocyclic residue”, or “carbocyclyl” isintended to mean any stable 3-, 4-, 5-, 6-, or 7-membered monocyclic orbicyclic or 7-, 8-, 9-, 10-, 11-, 12-, or 13-membered bicyclic ortricyclic hydrocarbon ring, any of which may be saturated, partiallyunsaturated, unsaturated or aromatic. Examples of such carbocyclesinclude, but are not limited to, cyclopropyl, cyclobutyl, cyclobutenyl,cyclopentyl, cyclopentenyl, cyclohexyl, cycloheptenyl, cycloheptyl,cycloheptenyl, adamantyl, cyclooctyl, cyclooctenyl, cyclooctadienyl,[3.3.0]bicyclooctane, [4.3.0]bicyclononane, [4.4.0]bicyclodecane,[2.2.2]bicyclooctane, fluorenyl, phenyl, naphthyl, indanyl, adamantyl,anthracenyl, and tetrahydronaphthyl (tetralin). As shown above, bridgedrings are also included in the definition of carbocycle (e.g.,[2.2.2]bicyclooctane). Preferred carbocycles, unless otherwisespecified, are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, phenyl,and indanyl. When the term “carbocycle”, “carbocyclic residue”, or“carbocyclyl” is used, it is intended to include “aryl”. A bridged ringoccurs when one or more carbon atoms link two non-adjacent carbon atoms.Preferred bridges are one or two carbon atoms. It is noted that a bridgealways converts a monocyclic ring into a tricyclic ring. When a ring isbridged, the substituents recited for the ring may also be present onthe bridge.

The term “aryl” refers to monocyclic, bicyclic, tricyclic aromatichydrocarbon groups having 6 to 15 carbon atoms in the ring portion, suchas phenyl, naphthyl, biphenyl and diphenyl groups, each of which may besubstituted. Aryl groups which are bicyclic or tricyclic must include atleast one fully aromatic ring but the other fused ring or rings may bearomatic or non-aromatic. When an aryl is substituted with a furtherheterocyclic ring, said ring may be attached to the aryl through acarbon atom or a heteroatom and said ring in turn is optionallysubstituted with one to two substituents as valence allows.

The terms “aryloxy”, “arylamino”, “arylalkylamino”, “arylthio”,“arylalkanoylamino”, “arylsulfonyl”, “arylalkoxy”, “arylsulfinyl”,“arylheteroaryl”, “arylalkylthio”, “arylcarbonyl”, “arylalkenyl”, or“arylalkylsulfonyl” refer to an aryl or substituted aryl bonded to anoxygen; an amino; an alkylamino; a thio; an alkanoylamino; a sulfonyl;an alkoxy; a sulfinyl; a heteroaryl or substituted heteroaryl; analkylthio; a carbonyl; an alkenyl; or an alkylsulfonyl, respectively.

The term “alkenyl” refers to straight or branched chain hydrocarbongroups of 2 to 20 carbon atoms, preferably 2 to 15 carbon atoms, andmost preferably 2 to 8 carbon atoms, having one to four double bonds.

The term “alkynyl” refers to straight or branched chain hydrocarbongroups of 2 to 20 carbon atoms, preferably 2 to 15 carbon atoms, andmost preferably 2 to 8 carbon atoms, having one to four triple bonds.

The term “cycloalkyl” refers to an optionally substituted, saturatedcyclic hydrocarbon ring systems, preferably containing 1 to 3 rings and3 to 7 carbons per ring. Exemplary groups include cyclopropyl,cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl,cyclodecyl, cyclododecyl, and adamantyl. Exemplary substituents includeone or more alkyl groups as described above, or one or more groupsdescribed above as alkyl substituents. Accordingly, in compounds offormula I, the term “cycloalkyl” includes cyclopropyl, cyclobutyl,cyclopentyl, cyclohexyl, cycloheptyl, bicyclooctyl, etc., as well as thefollowing ring systems,

and the like, which optionally may be substituted at any available atomsof the ring(s). Preferred cycloalkyl groups include cyclopropyl,cyclopentyl, cyclohexyl,

As used herein, the term “heterocycle”, “heterocyclyl”, “heterocyclicring” or “heterocyclic group” is intended to mean a stable 4-, 5-, 6-,or 7-membered monocyclic or bicyclic or 7-, 8-, 9-, 10-, 11-, 12-, 13-,or 14-membered bicyclic heterocyclic ring which is saturated, partiallyunsaturated or fully unsaturated or aromatic, and which consists ofcarbon atoms and 1, 2, 3 or 4 heteroatoms independently selected from N,O and S; and including any bicyclic group in which any of theabove-defined heterocyclic rings is fused to a benzene ring. Thenitrogen and sulfur heteroatoms may optionally be oxidized (i.e., N→Oand S(O)_(p)). The nitrogen atom may be substituted or unsubstituted(i.e., N or NR wherein R is H or another substituent, if defined). Theheterocyclic ring may be attached to its pendant group at any heteroatomor carbon atom that results in a stable structure. The heterocyclicrings described herein may be substituted on a carbon atom or on anitrogen atom if the resulting compound is stable. A nitrogen atom inthe heterocycle may optionally be quaternized. It is preferred that whenthe total number of S and O atoms in the heterocycle exceeds 1, thenthese heteroatoms are not adjacent to one another. It is preferred thatthe total number of S and O atoms in the heterocycle is not more than 1.When the term “heterocycle”, “heterocyclyl”, “heterocyclic ring” or“heterocyclic group” is used, it is intended to include heteroaryl.

Examples of heterocycles include, but are not limited to, acridinyl,azocinyl, benzimidazolyl, benzofuranyl, benzothiofuranyl, benzoxazolyl,benzoxazolinyl, benzthiazolyl, benztriazolyl, benztetrazolyl,benzisoxazolyl, benzisothiazolyl, benzimidazolinyl, carbazolyl,4aH-carbazolyl, carbolinyl, chromanyl, chromenyl, cinnolinyl,decahydroquinolinyl, 2H,6H-1,5,2-dithiazinyl,dihydrofuro[2,3-b]tetrahydrofuran, furanyl, furazanyl, imidazolidinyl,imidazolinyl, imidazolyl, 1H-indazolyl, indolenyl, indolinyl,indolizinyl, indolyl, 3H-indolyl, isatinoyl, isobenzofuranyl,isochromanyl, isoindazolyl, isoindolinyl, isoindolyl, isoquinolinyl,isothiazolyl, isothiazolopyridinyl, isoxazolyl, isoxazolopyridinyl,methylenedioxyphenyl, morpholinyl, naphthyridinyl,octahydroisoquinolinyl, oxadiazolyl, 1,2,3-oxadiazolyl,1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, oxazolidinyl,oxazolyl, oxindolyl, pyrimidinyl, phenanthridinyl, phenanthrolinyl,phenazinyl, phenothiazinyl, phenoxathinyl, phenoxazinyl, phthalazinyl,piperazinyl, piperidinyl, piperidonyl, 4-piperidonyl, piperonyl,pteridinyl, purinyl, pyranyl, pyrazinyl, pyrazolidinyl, pyrazolinyl,pyrazolyl, pyridazinyl, pyridooxazole, pyridoimidazole, pyridothiazole,pyridinyl, pyrimidinyl, pyrrolidinyl, pyrrolinyl, 2-pyrrolidonyl,2H-pyrrolyl, pyrrolyl, quinazolinyl, quinolinyl, 4H-quinolizinyl,quinoxalinyl, quinuclidinyl, tetrahydrofuranyl, tetrahydroisoquinolinyl,tetrahydroquinolinyl, tetrazolyl, 6H-1,2,5-thiadiazinyl,1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl,1,3,4-thiadiazolyl, thianthrenyl, thiazolyl, thienyl, thienothiazolyl,thienooxazolyl, thienoimidazolyl, thiophenyl, triazinyl,1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, andxanthenyl. Also included are fused ring and spiro compounds containing,for example, the above heterocycles.

Preferred 5- to 10-membered heterocycles include, but are not limitedto, pyridinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, pyrazinyl,piperazinyl, piperidinyl, imidazolyl, imidazolidinyl, indolyl,tetrazolyl, isoxazolyl, morpholinyl, oxazolyl, oxadiazolyl,oxazolidinyl, tetrahydrofuranyl, thiadiazinyl, thiadiazolyl, thiazolyl,triazinyl, triazolyl, benzimidazolyl, 1H-indazolyl, benzofuranyl,benzothiofuranyl, benztetrazolyl, benzotriazolyl, benzisoxazolyl,benzoxazolyl, oxindolyl, benzoxazolinyl, benzthiazolyl,benzisothiazolyl, isatinoyl, isoquinolinyl, octahydroisoquinolinyl,tetrahydroisoquinolinyl, tetrahydroquinolinyl, isoxazolopyridinyl,quinazolinyl, quinolinyl, isothiazolopyridinyl, thiazolopyridinyl,oxazolopyridinyl, imidazolopyridinyl, and pyrazolopyridinyl.

Preferred 5- to 6-membered heterocycles include, but are not limited to,pyridinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, pyrazinyl,piperazinyl, piperidinyl, imidazolyl, imidazolidinyl, indolyl,tetrazolyl, isoxazolyl, morpholinyl, oxazolyl, oxadiazolyl,oxazolidinyl, tetrahydrofuranyl, thiadiazinyl, thiadiazolyl, thiazolyl,triazinyl, and triazolyl. Also included are fused ring and spirocompounds containing, for example, the above heterocycles.

Bridged rings are also included in the definition of heterocycle. Abridged ring occurs when one or more atoms (i.e., C, O, N, or S) linktwo non-adjacent carbon or nitrogen atoms. Preferred bridges include,but are not limited to, one carbon atom, two carbon atoms, one nitrogenatom, two nitrogen atoms, and a carbon-nitrogen group. It is noted thata bridge always converts a monocyclic ring into a tricyclic ring. When aring is bridged, the substituents recited for the ring may also bepresent on the bridge.

The term “heteroaryl” refers to substituted and unsubstituted aromatic5- or 6-membered monocyclic groups, 9- or 10-membered bicyclic groups,and 11- to 14-membered tricyclic groups which have at least oneheteroatom (O, S or N) in at least one of the rings, saidheteroatom-containing ring preferably having 1, 2, or 3 heteroatomsselected from O, S, and N. Each ring of the heteroaryl group containinga heteroatom can contain one or two oxygen or sulfur atoms and/or fromone to four nitrogen atoms provided that the total number of heteroatomsin each ring is four or less and each ring has at least one carbon atom.Heteroaryl groups can be substituted or unsubstituted. The nitrogen atommay be substituted or unsubstituted (i.e., N or NR wherein R is H oranother substituent, if defined). The nitrogen and sulfur heteroatomsmay optionally be oxidized (i.e., N→O and S(O)_(p)) and the nitrogenatoms may optionally be quaternized.

Heteroaryl groups which are bicyclic or tricyclic must include at leastone fully aromatic ring but the other fused ring or rings may bearomatic or non-aromatic. The heteroaryl group may be attached at anyavailable nitrogen or carbon atom of any ring. The heteroaryl ringsystem may contain zero, one, two or three substituents.

Exemplary monocyclic heteroaryl groups include pyrrolyl, pyrazolyl,pyrazolinyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, thiadiazolyl,isothiazolyl, furanyl, thienyl, oxadiazolyl, pyridyl, pyrazinyl,pyrimidinyl, pyridazinyl, triazinyl and the like.

Exemplary bicyclic heteroaryl groups include indolyl, benzothiazolyl,benzodioxolyl, benzoxazolyl, benzothienyl, quinolinyl,dihydroisoquinolinyl, tetrahydroquinolinyl, isoquinolinyl,benzimidazolyl, benzopyranyl, benzoxazinyl, indolizinyl, benzofuranyl,chromonyl, coumarinyl, benzopyranyl, cinnolinyl, quinoxalinyl,indazolyl, pyrrolopyridyl, furopyridyl, dihydroisoindolyl, and the like.

Exemplary tricyclic heteroaryl groups include carbazolyl, benzidolyl,phenanthrollinyl, acridinyl, phenanthridinyl, xanthenyl and the like.

The term “heteroatoms” shall include oxygen, sulfur and nitrogen.

As referred to herein, the term “substituted” means that one or morehydrogen atoms is replaced with a non-hydrogen group, provided thatnormal valencies are maintained and that the substitution results in astable compound. When a substituent is keto (i.e., ═O), then 2 hydrogenson the atom are replaced. Keto substituents are not present on aromaticmoieties. When a ring system (e.g., carbocyclic or heterocyclic) is saidto be substituted with a carbonyl group or a double bond, it is intendedthat the carbonyl group or double bond be part (i.e., within) of thering. Ring double bonds, as used herein, are double bonds that areformed between two adjacent ring atoms (e.g., C═C, C═N, or N═N).

When any variable occurs more than one time in any constituent orformula for a compound, its definition at each occurrence is independentof its definition at every other occurrence. Thus, for example, if agroup is shown to be substituted with 0-3 R_(e), then said group mayoptionally be substituted with up to three R_(e) groups and R_(e) ateach occurrence is selected independently from the definition of R_(e).Also, combinations of substituents and/or variables are permissible onlyif such combinations result in stable compounds.

Utility

The compounds of the invention may be used to modulate kinaseactivities.

Applicants have discovered that compounds of Formulae (I)-(V) haveparticular utility in treating proliferative conditions associated withthe modulation of kinase activity, and particularly the inhibition ofserine/threonine kinase activities. The compounds of the presentinvention can be used to treat proliferative disorders associated withabnormal kinase activity. As used herein, the terms “treating” and“treatment” encompass either or both responsive and prophylaxismeasures, e.g., measures designed to inhibit or delay the onset of thedisease or disorder, achieve a full or partial reduction of the symptomsor disease state, and/or to alleviate, ameliorate, lessen, or cure thedisease or disorder and/or its symptoms.

Accordingly, one aspect of the invention is the use of a compound of theFormulae (I)-(V), or a pharmaceutically acceptable salt thereof in themanufacture of a medicament for use in the production of anantiproliferative effect in a warm-blooded animal such as a human being.

According to a further feature of the invention there is provided amethod for producing an antiproliferative effect in a warm-bloodedanimal, such as a human being, in need of such treatment which comprisesadministering to said animal an effective amount of a compound ofFormulae (I)-(V) or a pharmaceutically acceptable salt thereof asdefined herein before.

The anti-proliferative treatment defined herein before may be applied asa sole therapy or may involve, in addition to a compound of theinvention, one or more other substances and/or treatments. Suchtreatment may be achieved by way of the simultaneous, sequential orseparate administration of the individual components of the treatment.The compounds of this invention may also be useful in combination withknown anti-cancer and cytotoxic agents and treatments, includingradiation. Compounds of Formulae (I)-(V) may be used sequentially withknown anticancer or cytotoxic agents and treatment, including radiationwhen a combination formulation is inappropriate.

The term “anti-cancer” agent includes any known agent that is useful forthe treatment of cancer including the following: 17α-ethinylestradiol,diethylstilbestrol, testosterone, prednisone, fluoxymesterone,dromostanolone propionate, testolactone, megestrolacetate,methylprednisolone, methyl-testosterone, prednisolone, triamcinolone,chlorotrianisene, hydroxyprogesterone, aminoglutethimide, estramustine,medroxyprogesteroneacetate, leuprolide, flutamide, toremifene, ZOLADEX®;matrix metalloproteinase inhibitors; VEGF inhibitors, such as anti-VEGFantibodies (AVASTIN®) and small molecules such as ZD6474 and SU6668;Vatalanib, BAY-43-9006, SU11248, CP-547632, and CEP-7055; HER 1 and HER2 inhibitors including anti-HER2 antibodies (HERCEPTIN); EGFR inhibitorsincluding gefitinib, erlotinib, ABX-EGF, EMD72000, 11F8, and cetuximab;Eg5 inhibitors, such as SB-715992, SB-743921, and MKI-833; pan Herinhibitors, such as canertinib, EKB-569, CI-1033, AEE-788, XL-647, mAb2C4, and GW-572016; Src inhibitors, e.g., GLEEVEC® and dasatinib;CASODEX® (bicalutamide, Astra Zeneca), Tamoxifen; MEK-1 kinaseinhibitors, MAPK kinase inhibitors, PI3 kinase inhibitors; PDGFinhibitors, such as imatinib; antiangiogenic and antivascular agentswhich, by interrupting blood flow to solid tumors, render cancer cellsquiescent by depriving them of nutrition; castration, which rendersandrogen dependent carcinomas non-proliferative; inhibitors ofnon-receptor and receptor tyrosine kinases; inhibitors of integrinsignaling; tubulin acting agents such as vinblastine, vincristine,vinorelbine, vinflunine, paclitaxel, docetaxel,7-O-methylthiomethylpaclitaxel, 4-desacetyl-4-methylcarbonatepaclitaxel,3′-tert-butyl-3′-N-tert-butyloxycarbonyl-4-deacetyl-3′-dephenyl-3′-N-debenzoyl-4-O-methoxycarbonyl-paclitaxel,C-4 methyl carbonate paclitaxel, epothilone A, epothilone B, epothiloneC, epothilone D,[1S-[1R*,3R*(E),7R*,10S*,11R*,12R*,16S*]]-7-11-dihydroxy-8,8,10,12,16-pentamethyl-3-[1-methyl-2-(2-methyl-4-thiazolyl)ethenyl]-4-aza-17oxabicyclo[14.1.0]heptadecane-5,9-dione (ixabepilone),[1S-[1R*,3R*(E),7R*,10S*,11R*,12R*,16S*]]-3-[2-[2-(aminomethyl)-4-thiazolyl]-1-methylethenyl]-7,11-dihydroxy-8,8,10,12,16-pentamethyl-4-17-dioxabicyclo[14.1.0]-heptadecane-5,9-dione,and derivatives thereof; other CDK inhibitors, anti-proliferative cellcycle inhibitors, epidophyllotoxin, etoposide, VM-26; antineoplasticenzymes, e.g., topoisomerase I inhibitors, camptothecin, topotecan,SN-38; procarbazine; mitoxantrone; platinum coordination complexes suchas cisplatin, carboplatin and oxaliplatin; biological responsemodifiers; growth inhibitors; antihormonal therapeutic agents;leucovorin; tegafur; antimetabolites such as purine antagonists (e.g.,6-thioguanine and 6-mercaptopurine; glutamine antagonists, e.g., DON(AT-125; d-oxo-norleucine); ribonucleotide reductase inhibitors; mTORinhibitors; and haematopoietic growth factors.

Additional cytotoxic agents include, cyclophosphamide, doxorubicin,daunorubicin, mitoxanthrone, melphalan, hexamethyl melamine, thiotepa,cytarabin, idatrexate, trimetrexate, dacarbazine, L-asparaginase,bicalutamide, leuprolide, pyridobenzoindole derivatives, interferons,and interleukins.

In the field of medical oncology it is normal practice to use acombination of different forms of treatment to treat each patient withcancer. In medical oncology the other component(s) of such treatment inaddition to the antiproliferative treatment defined herein may besurgery, radiotherapy or chemotherapy. Such chemotherapy may cover threemain categories of therapeutic agent:

(i) antiangiogenic agents that work by different mechanisms from thosedefined herein before (for example, linomide, inhibitors of integrinαvβ3 function, angiostatin, razoxane);

(ii) cytostatic agents such as antiestrogens (for example, tamoxifen,toremifene, raloxifene, droloxifene, iodoxifene), progestogens (forexample, megestrol acetate), aromatase inhibitors (for example,anastrozole, letrozole, borazole, exemestane), antihormones,antiprogestogens, antiandrogens (for example, flutamide, nilutamide,bicalutamide, cyproterone acetate), LHRH agonists and antagonists (forexample, gosereline acetate, leuprolide), inhibitors of testosterone5α-dihydroreductase (for example, finasteride), famesyltransferaseinhibitors, anti-invasion agents (for example, metalloproteinaseinhibitors such as marimastat and inhibitors of urokinase plasminogenactivator receptor function) and inhibitors of growth factor function,(such growth factors include for example, EGF, FGF, platelet derivedgrowth factor and hepatocyte growth factor, such inhibitors includegrowth factor antibodies, growth factor receptor antibodies such asAVASTIN® (bevacizumab) and ERBITUX® (cetuximab); tyrosine kinaseinhibitors and serine/threonine kinase inhibitors); and

(iii) antiproliferative/antineoplastic drugs and combinations thereof,as used in medical oncology, such as antimetabolites (for example,antifolates such as methotrexate, fluoropyrimidines such as5-fluorouracil, purine and adenosine analogues, cytosine arabinoside);intercalating antitumor antibiotics (for example, anthracyclines such asdoxorubicin, daunomycin, epirubicin and idarubicin, mitomycin-C,dactinomycin, mithramycin); platinum derivatives (for example,cisplatin, carboplatin); alkylating agents (for example, nitrogenmustard, melphalan, chlorambucil, busulphan, cyclophosphamide,ifosfamide, nitrosoureas, thiotepa; antimitotic agents (for example,vinca alkaloids like vincristine, vinorelbine, vinblastine andvinflunine) and taxoids such as TAXOL® (paclitaxel), Taxotere(docetaxel) and newer microbtubule agents such as epothilone analogs(ixabepilone), discodermolide analogs, and eleutherobin analogs;topoisomerase inhibitors (for example, epipodophyllotoxins such asetoposide and teniposide, amsacrine, topotecan, irinotecan); cell cycleinhibitors (for example, flavopyridols); biological response modifiersand proteasome inhibitors such as VELCADE® (bortezomib).

As stated above, the Formulae (I)-(V) compounds of the invention are ofinterest for their antiproliferative effects. Such compounds of theinvention are expected to be useful in a wide range of disease statesincluding cancer, psoriasis, and rheumatoid arthritis.

More specifically, the compounds of Formulae (I)-(V) are useful in thetreatment of a variety of cancers, including (but not limited to) thefollowing:

-   -   carcinoma, including that of the prostate, pancreatic ductal        adenocarcinoma, breast, colon, lung, ovary, pancreas, and        thyroid;    -   tumors of the central and peripheral nervous system, including        neuroblastoma, glioblastoma, and medulloblastoma; and    -   other tumors, including melanoma and multiple myeloma.

Due to the key role of kinases in the regulation of cellularproliferation in general, inhibitors could act as reversible cytostaticagents which may be useful in the treatment of any disease process whichfeatures abnormal cellular proliferation, e.g., benign prostatehyperplasia, familial adenomatosis polyposis, neurofibromatosis,pulmonary fibrosis, arthritis, psoriasis, glomerulonephritis, restenosisfollowing angioplasty or vascular surgery, hypertrophic scar formationand inflammatory bowel disease.

The compounds of Formulae (I)-(V) are especially useful in treatment oftumors having a high incidence of serine/threonine kinase activity, suchas prostate, colon, lung, brain, thyroid and pancreatic tumors.Additionally, the compounds of the invention may be useful in treatmentof sarcomas and pediatric sarcomas. By the administration of acomposition (or a combination) of the compounds of this invention,development of tumors in a mammalian host is reduced.

Compounds of Formulae (I)-(V) may also be useful in the treatment ofother cancerous diseases (such as acute myelogenous leukemia) that maybe associated with signal transduction pathways operating throughkinases such as DYRK1a, CDK, and GSK3P. The inventive compositions maycontain other therapeutic agents as described above and may beformulated, for example, by employing conventional solid or liquidvehicles or diluents, as well as pharmaceutical additives of a typeappropriate to the mode of desired administration (e.g., excipients,binders, preservatives, stabilizers, flavors, etc.) according totechniques such as those well known in the art of pharmaceuticalformulation.

Accordingly, the present invention further includes compositionscomprising one or more compounds of Formulae (I)-(V) and apharmaceutically acceptable carrier.

A “pharmaceutically acceptable carrier” refers to media generallyaccepted in the art for the delivery of biologically active agents toanimals, in particular, mammals. Pharmaceutically acceptable carriersare formulated according to a number of factors well within the purviewof those of ordinary skill in the art. These include, withoutlimitation: the type and nature of the active agent being formulated;the subject to which the agent-containing composition is to beadministered; the intended route of administration of the composition;and, the therapeutic indication being targeted. Pharmaceuticallyacceptable carriers include both aqueous and non-aqueous liquid media,as well as a variety of solid and semi-solid dosage forms. Such carrierscan include a number of different ingredients and additives in additionto the active agent, such additional ingredients being included in theformulation for a variety of reasons, e.g., stabilization of the activeagent, binders, etc., well known to those of ordinary skill in the art.Descriptions of suitable pharmaceutically acceptable carriers, andfactors involved in their selection, are found in a variety of readilyavailable sources such as, for example, Remington's PharmaceuticalSciences, 17th Edition (1985), which is incorporated herein by referencein its entirety.

The pharmaceutical compositions of the invention containing the activeingredient may be in a form suitable for oral use, for example, astablets, troches, lozenges, aqueous or oily suspensions, dispersiblepowders or granules, emulsions, hard or soft capsules, or syrups orelixirs. Compositions intended for oral use may be prepared according toany method known to the art for the manufacture of pharmaceuticalcompositions and such compositions may contain one or more agentsselected from the group consisting of sweetening agents, flavoringagents, coloring agents and preserving agents in order to providepharmaceutically elegant and palatable preparations.

Formulations for oral use may also be presented as hard gelatin capsuleswherein the active ingredient is mixed with an inert solid diluent, forexample, calcium carbonate, calcium phosphate or kaolin, or as softgelatin capsules wherein the active ingredient is mixed with watersoluble carrier such as polyethyleneglycol or an oil medium, for examplepeanut oil, liquid paraffin, or olive oil.

The pharmaceutical compositions may be in the form of sterile injectableaqueous solutions. Among the acceptable vehicles and solvents that maybe employed are water, Ringer's solution and isotonic sodium chloridesolution. The sterile injectable preparation may also be a sterileinjectable oil-in-water microemulsion where the active ingredient isdissolved in the oily phase. For example, the active ingredient may befirst dissolved in a mixture of soybean oil and lecithin. The oilsolution then introduced into a water and glycerol mixture and processedto form a microemulation.

The injectable solutions or microemulsions may be introduced into apatient's blood-stream by local bolus injection. Alternatively, it maybe advantageous to administer the solution or microemulsion in such away as to maintain a constant circulating concentration of the instantcompound. In order to maintain such a constant concentration, acontinuous intravenous delivery device may be utilized. An example ofsuch a device is the Deltec CADD-PLUS® Model 5400 intravenous pump.

The pharmaceutical compositions may be in the form of a sterileinjectable aqueous or oleagenous suspension for intramuscular andsubcutaneous administration. This suspension may be formulated accordingto the known art using those suitable dispersing or wetting agents andsuspending agents which have been mentioned above.

The compounds of Formulae (I)-(V) may be administered by any meanssuitable for the condition to be treated, which may depend on the needfor site-specific treatment or quantity of drug to be delivered. Topicaladministration is generally preferred for skin-related diseases, andsystematic treatment preferred for cancerous or pre-cancerousconditions, although other modes of delivery are contemplated. Forexample, the compounds may be delivered orally, such as in the form oftablets, capsules, granules, powders, or liquid formulations includingsyrups; topically, such as in the form of solutions, suspensions, gelsor ointments; sublingually; buccally; parenterally, such as bysubcutaneous, intravenous, intramuscular or intrasternal injection orinfusion techniques (e.g., as sterile injectable aq. or non-aq.solutions or suspensions); nasally such as by inhalation spray;topically, such as in the form of a cream or ointment; rectally such asin the form of suppositories; or liposomally. Dosage unit formulationscontaining non-toxic, pharmaceutically acceptable vehicles or diluentsmay be administered. The compounds may be administered in a formsuitable for immediate release or extended release. Immediate release orextended release may be achieved with suitable pharmaceuticalcompositions or, particularly in the case of extended release, withdevices such as subcutaneous implants or osmotic pumps.

Exemplary compositions for topical administration include a topicalcarrier such as Plastibase (mineral oil gelled with polyethylene).

Exemplary compositions for oral administration include suspensions whichmay contain, for example, microcrystalline cellulose for imparting bulk,alginic acid or sodium alginate as a suspending agent, methylcelluloseas a viscosity enhancer, and sweeteners or flavoring agents such asthose known in the art; and immediate release tablets which may contain,for example, microcrystalline cellulose, dicalcium phosphate, starch,magnesium stearate and/or lactose and/or other excipients, binders,extenders, disintegrants, diluents and lubricants such as those known inthe art. The inventive compounds may also be orally delivered bysublingual and/or buccal administration, e.g., with molded, compressed,or freeze-dried tablets. Exemplary compositions may includefast-dissolving diluents such as mannitol, lactose, sucrose, and/orcyclodextrins. Also included in such formulations may be high molecularweight excipients such as celluloses (AVICEL®) or polyethylene glycols(PEG); an excipient to aid mucosal adhesion such as hydroxypropylcellulose (HPC), hydroxypropyl methyl cellulose (HPMC), sodiumcarboxymethyl cellulose (SCMC), and/or maleic anhydride copolymer (e.g.,Gantrez); and agents to control release such as polyacrylic copolymer(e.g., Carbopol 934). Lubricants, glidants, flavors, coloring agents andstabilizers may also be added for ease of fabrication and use.

Exemplary compositions for nasal aerosol or inhalation administrationinclude solutions which may contain, for example, benzyl alcohol orother suitable preservatives, absorption promoters to enhance absorptionand/or bioavailability, and/or other solubilizing or dispersing agentssuch as those known in the art.

Exemplary compositions for parenteral administration include injectablesolutions or suspensions which may contain, for example, suitablenon-toxic, parenterally acceptable diluents or solvents, such asmannitol, 1,3-butanediol, water, Ringer's solution, an isotonic sodiumchloride solution, or other suitable dispersing or wetting andsuspending agents, including synthetic mono- or diglycerides, and fattyacids, including oleic acid.

Exemplary compositions for rectal administration include suppositorieswhich may contain, for example, suitable non-irritating excipients, suchas cocoa butter, synthetic glyceride esters or polyethylene glycols,which are solid at ordinary temperatures but liquefy and/or dissolve inthe rectal cavity to release the drug.

When a compound according to this invention is administered into a humansubject, the daily dosage will normally be determined by the prescribingphysician with the dosage generally varying according to the age,weight, sex and response of the individual patient, as well as theseverity of the patient's symptoms. Exemplary dosage amounts for amammal may include from about 0.05 to 1000 mg/kg; 1-1000 mg/kg; 1-50mg/kg; 5-250 mg/kg; 250-1000 mg/kg of body weight of active compound perday, which may be administered in a single dose or in the form ofindividual divided doses, such as from 1 to 4 times per day. It will beunderstood that the specific dose level and frequency of dosage for anyparticular subject may be varied and will depend upon a variety offactors, including the activity of the specific compound employed, themetabolic stability and length of action of that compound, the species,age, body weight, general health, sex and diet of the subject, the modeand time of administration, rate of excretion, drug combination, andseverity of the particular condition. Preferred subjects for treatmentinclude animals, most preferably mammalian species such as humans, anddomestic animals such as dogs, cats, horses, and the like. Thus, whenthe term “patient” is used herein, this term is intended to include allsubjects, most preferably mammalian species, that are affected bymediation of protein kinase enzyme levels.

If formulated as a fixed dose, a combination product can, for example,utilize a dosage of the compound of Formulae (I)-(V) within the dosagerange described above and the dosage of another anti-canceragent/treatment within the approved dosage range for such knownanti-cancer agent/treatment. If a combination product is inappropriate,the compounds of Formulae (I)-(V) and the other anti-canceragent/treatment can, for example, be administered simultaneously orsequentially. If administered sequentially, the present invention is notlimited to any particular sequence of administration. For example,compounds of Formulae (I)-(V) can be administered either prior to, orafter, administration of the known anti-cancer agent or treatment.

Biological Assays CK1ε and CK1δ Kinase Assays

The kinase assay was performed in V-bottom 384-well plates. The finalassay volume was 30 μl prepared from 15 μl additions of enzyme,substrates (fluoresceinated peptide FL-AHA-KRRRAL-PSER-VASLPGL-OH andATP) and test compounds in assay buffer (20 mM HEPES pH 7.4, 30 mMMgCl₂, 0.015% Brij35 and 4 mM DTT). The reaction was incubated at roomtemperature for 22 hours and terminated by adding 45 μl of 35 mM EDTA toeach sample. The reaction mixture was analyzed on the CaliperLABCHIP®3000 (Caliper, Hopkinton, Mass.) by electrophoretic separationof the unphosphorylated substrate and phosphorylated product. Inhibitiondata were calculated by comparison of the no enzyme control reactionsfor 100% inhibition and vehicle-only reactions for 0% inhibition. Thefinal concentration of reagents in the assay were 200 pM CK1ε or CK1δ,50 μM ATP, 1.5 μM FL-AHA-KRRRAL-PSER-VASLPGL-OH, and 1.6% DMSO. Doseresponse curves were generated to determine the concentration requiredto inhibit 50% of the kinase activity (IC₅₀). Compounds were dissolvedat 10 mM in dimethylsulfoxide (DMSO) and evaluated at elevenconcentrations. IC₅₀ values were derived by non-linear regressionanalysis.

The following Compounds were found to have the IC₅₀ described in Table Awhen measured in the assays described above. IC₅₀ ranges against CK1εand CK1δ are as follows: A=0.01-10 nM; B=10.01-100 nM; C=100.01-2000 nM.

TABLE A CK1ε CK1δ Example No. (IC₅₀, nM) (IC₅₀, nM) 1 B B 2 B B 3 B A 4B B 5 B B 6 A A 7 B B 8 B B 9 A A 10 A A 11 B B 12 C B 13 B A 14 B B 15C B 16 A A 17 B A 18 C B 19 A A 20 B B 21 A A 22 A A 23 A 24 B B 25 B A26 B B 27 B B 28 B B 29 B A 30 B B 31 A A 32 B B 33 B A 34 B A 35 A A 36B A 37 A A 38 A A 39 B A 40 C B 41 A A 42 C B 43 B B 44 B A 45 A A 46 BA 47 C B 48 C B 49 A A 50 A A 51 A A 52 B B 53 A A 54 A A 55 A A 56 A A57 C B 58 A A 59 A A 60 A A 61 A A 62 A A 63 A A 64 B B 65 C C 66 B A 67A A 68 B A 69 A A 70 A A 71 A A 72 A A 73 A A 74 A A 75 B B 76 A A 77 AA 78 A A 79 A A 80 A A 81 A A 82 A A 83 B C 84 B A 85 A A 86 B A 87 B A88 B B 89 B A 90 B A 91 C B 92 C C 93 A A 94 A A 95 A A 96 B B 97 B A 98A A 99 A A 100 A A 101 A A 102 B A 103 B A 104 A A 105 B A 106 B A 107 CB 108 A A 109 A A 110 C B 111 C C 112 C B 113 C B 114 B B 115 C B 116 BB 117 A A 118 C C 119 A A 120 C B 121 C B 122 C C 123 C B 124 C C 125 CC 126 C C 127 C C 128 A B 129 A A 130 B B 131 C C 132 C C 133 C C 134 CC 135 C C 136 C C 137 B A 138 C C 139 C B 140 C C 141 C C 142 C C 143 BA 144 C C 145 C C 146 C C 147 C C 148 A A 149 C B 150 B A 151 C C 152 AA 153 C C 154 B B 155 C C 156 A A 157 A A 158 A A 159 A A 160 A A 161 AA 162 A A 163 A A 164 A A 165 A A 166 A A 167 A A 168 A A 169 A A 170 AA 171 A A 172 A A 173 A A 174 A A 175 A A 176 A A 177 A A 178 179 A A180 A A 181 A A 182 A A 183 A A 184 A A 185 A A 186 A A 187 A A 188 A A189 A A 190 A A 191 A A 192 A A 193 A A 194 A A 195 A A 196 A A 197 A A198 A A 199 A A 200 A A 201 A A 202 A A 203 A A 204 A A 205 A A 206 A A207 A A 208 A A 209 A A 210 A A 211 A A 212 A A 213 A A 214 A A 215 A A216 A A 217 A A 218 A B 219 A A 220 A A 221 A A 222 A A 223 A A 224 A A225 A A 226 227 A A 228 A A 229 A A 230 A A 231 A A 232 A A 233 A A 234A A 235 A A 236 A A 237 A A 238 A A 239 A 240 A A 241 A A 242 A A 243 AA 244 A A 245 A A 246 A A 247 A A 248 A A 249 A A 250 A A 251 A A 252 AA 253 A A 254 A A 255 A A 256 A A 257 A A 258 A A 259 A A 260 A A 261 AA 262 A A 263 A A 264 A A 265 A 266 A A 267 A 268 A 269 A 270 A A 271 AA 272 A A 273 A A 274 C C 275 A A 276 A A 277 A B 278 B B 279 A A 280 AA 281 A A 282 A A 283 C C 284 B B 285 A A 286 C C 287 A B 288 C C 289 AA 290 C C 291 A A 292 A 293 A A 294 A A 295 A 296 A 297 A A 298 299 A A300 A A 301 A A 302 A A 303 A A 304 305 306 307 308 A A 309 A A 310 A A311 A A 312 A A 313 A A 314 A A 315 A A 316 A A 317 A A 318 A A 319 A A320 A A 321 A A 322 A A 323 A B 324 A A 325 A A 326 A A 327 A A 328 B B329 A A 330 A A 331 A A 332 A A 333 A A 334 A A 335 C C 336 A A 337 338339 340 341 C C 342 A A 343 B B 344 A A 345 B B 346 A A 347 A A 348 A A349 A A A1  A A A2  A A A3  A A A4  A A A5  A A A6  A A7  A A8  A A A9 A A A10 A A A11 A A A12 A A A13 A A A14 A15 A A A16 A A A17 A A A18 AA19 A A20 A A A21 A A A22 A A A23 A A24 A A A25 A A A26 A A A27 A A A28B B A29 B B A30 A A A31 A A A32 A A A33 A A A34 A A A35 A A A36 A A A37A A A38 A A A39 A A A40 A A A41 A A A42 A A A43 A A A44 A A A45 A A A46A A A47 A A A48 A A A49 A A A50 A A A51 A A A52 A A53 A A54 A A55 A AA56 A A A57 A A A58 A A A59 A A A60 A A A61 A A A62 A A A63 A A A64 C CA65 C C A66 A A67 A A68 A A A69 A A A70 A A A71 A A A72 A A A73 A A A74A A A75 A A A76 B B A77 A A A78 A A A79 C C A80 A A A81 B A A82 A83 A84B B A85 A A A86 A A A87 A A A88 A A A89 A A

Methods of Preparation

The compounds of the present invention may be prepared by methods suchas those illustrated in the following schemes. Solvents, temperatures,pressures, and other reaction conditions may readily be selected by oneof ordinary skill in the art. Starting materials are commerciallyavailable or readily prepared by one of ordinary skill in the art. Theseschemes are illustrative and are not meant to limit the possibletechniques one skilled in the art may use to manufacture compoundsdisclosed herein. Different methods may be evident to those skilled inthe art. Additionally, the various steps in the synthesis may beperformed in an alternate sequence or order to give the desiredcompound(s). All documents cited herein are incorporated herein byreference in their entirety.

In general, the time taken to complete a reaction procedure will bejudged by the person performing the procedure, preferably with the aidof information obtained by monitoring the reaction by methods such asHPLC or TLC. A reaction does not have to go to completion to be usefulto this invention. The methods for the preparation of variousheterocycles used to this invention can be found in standard organicreference books, for example, Katritzky, A. R. et al., eds.,Comprehensive Heterocyclic Chemistry, The Structure, Reactions,Synthesis and Uses, of Heterocyclic Compounds, First Edition, PergamonPress, New York (1984), and Katritzky, A. R. et al., eds., ComprehensiveHeterocyclic Chemistry II, A Review of the Literature 1982-1995: TheStructure, Reactions, Synthesis and Uses, of Heterocyclic Compounds,Pergamon Press, New York (1996).

Unless otherwise specified, the various substituents of the compoundsare:

HPLC Methods: The analytical HPLC/LC-MS retention time reported for eachexample and intermediate uses one of the following general analyticalHPLC/LC-MS methods:

Method A: SunFire C18 (4.6×150) mm, 3.5μ column; flow rate 1 mL/min;gradient time 15 min; 10% Solvent B to 100% Solvent B; monitoring at 254nm and 220 nm (Solvent A: 5% Acetonitrile, 95% water, 0.05% TFA; SolventB: 95% Acetonitrile, 5% water, 0.05% TFA).

Method B: XBridge Phenyl (4.6×150) mm, 3.5 column; flow rate 1 mL/min;gradient time 15 min; 10% Solvent B to 100% Solvent B; monitoring at 254nm and 220 nm (Solvent A: 5% Acetonitrile, 95% water, 0.05% TFA; SolventB: 95% Acetonitrile, 5% water, 0.05% TFA).

Method C: SunFire C18 (4.6×150) mm, 3.5 g column; flow rate 1 mL/min;gradient time 23 min; 100% Solvent A to 100% Solvent B and holding 100%Solvent B for 5 min; monitoring at 254 nm and 220 nm (Solvent A: 5%Acetonitrile, 95% water, 0.05% TFA; Solvent B: 95% Acetonitrile, 5%water, 0.05% TFA).

Method D: XBridge Phenyl (4.6×150) mm, 3.5 column; flow rate 1 mL/min;gradient time 23 min; 100% Mobile Phase A to 100% Mobile Phase B andholding 100% Solvent B for 5 min; monitoring at 254 nm and 220 nm(Solvent A: 5% Acetonitrile, 95% water, 0.05% TFA; Solvent B: 95%Acetonitrile, 5% water, 0.05% TFA).

Method E: Column: Ascentis Express C18 (50×2.1) mm, 2.7 μm; flow rate1.1 mL/min; gradient time 3 min; Temperature: 50° C., 0% Solvent B to100% Solvent B; monitoring at 220 nm (Solvent A: 95% Water: 5%Acetonitrile; 10 mM NH₄OAc; Solvent B: 5% Water: 95% Acetonitrile; 10 mMNH₄OAc).

Method F: SunFire C18 (4.6×150) mm, 3.5 g column, flow rate 1 mL/min;gradient time 23 min; 10% Solvent B to 100% Solvent B; monitoring at 254nm to 220 nm (Solvent A: 5% Acetonitrile, 95% Water, 0.05% TFA; SolventB: 95% Acetonitrile, 5% Water, 0.05% TFA).

Method G: XBridge Phenyl (4.6×150) mm, 3.5 g column, flow rate 1 mL/min;gradient time 23 min; 10% Solvent B to 100% Solvent B; monitoring at 254nm to 220 nm (Solvent A: 5% Acetonitrile, 95% Water, 0.05% TFA; SolventB: 95% Acetonitrile, 5% Water, 0.05% TFA).

Method H: Column: Waters BEH C18, 2.0×50 mm, 1.7-μm particles; MobilePhase A: 5:95 acetonitrile:water with 10 mM ammonium acetate; MobilePhase B: 95:5 acetonitrile:water with 10 mM ammonium acetate;Temperature: 40° C.; Gradient: 0.5 min hold at 0% B, 0-100% B over 4minutes, then a 0.5-minute hold at 100% B; Flow: 1 mL/min.

Method I: Column: Waters BEH C18, 2.0×50 mm, 1.7-μm particles; MobilePhase A: 5:95 methanol:water with 10 mM ammonium acetate; Mobile PhaseB: 95:5 methanol:water with 10 mM ammonium acetate; Temperature: 40° C.;Gradient: 0.5 min hold at 0% B, 0-100% B over 4 minutes, then a0.5-minute hold at 100% B; Flow rate: 0.5 mL/min.

Method J: Column: Ascentis Express C18 (50×4.6) mm, 2.7 μm, flow rate 4mL/min; gradient: 0 to 100% Solvent B over 4 min; Temperature: 50° C.Monitoring at 220 nm (Solvent A: 95:05 water: CH₃CN with 10 mM NH₄OAcand Solvent B: 05:95 water: CH₃CN with 10 mM NH₄OAc).

Method K: Column: Ascentis Express C18 (50×4.6) mm, 2.7 μm, flow rate 4mL/min; gradient: 0 to 100% Solvent B over 4 min; Temperature: 50° C.;monitoring at 220 nm (Solvent A: 95:05 water: CH₃CN with 0.1% TFA andSolvent B: 05:95 water: CH₃CN with 0.1% TFA).

Method L: Column: Ascentis Express C18 (50×2.1) mm, 2.7 μm, flow rate1.1 mL/min; gradient: 0 to 100% Solvent B over 3 min; Temperature: 50°C.; monitoring at 220 nm (Solvent A: 95:05 water: CH₃CN with 0.1% TFAand Solvent B: 05:95 water: CH₃CN with 0.1% TFA).

Method M: SunFire C18 (4.6×150) mm, 5 g column; flow rate 1 mL/min;gradient time 15 min; 10% Solvent B to 100% Solvent B; monitoring at 254nm and 220 nm (Solvent A: 5% Acetonitrile, 95% water, 0.05% TFA; SolventB: 95% Acetonitrile, 5% water, 0.05% TFA).

ABBREVIATIONS

The following abbreviations are used in the example section below andelsewhere herein:

-   Ac Acetyl-   AcOH Acetic acid-   Aq. Aqueous-   B₂Pin₂ Bis(pinacolato)diboron-   BAIB bis(acetoxy)iodobenzene-   BMS Borane dimethylsulfide-   BH₃.THF Borane in tetrahydrofuran-   Bn Benzyl-   Boc₂O Di-tert-butyl dicarbonate-   n-BuLi n-Butyl lithium-   t-BuNCO 2-Isocyanato-2-methylpropane-   CAN Ceric ammonium nitrate-   CDI 1,1′-Carbonyldiimidazole-   DAST Diethylaminosulfur trifluoride-   dba Dibenzylideneacetone-   DBU 1,8-Diazabicyclo[5.4.0]undec-7-ene-   DCM Dichloromethane-   DCE 1,2-Dichloroethene-   DEAD Diethyl azodicarboxylate-   DEOXO-FLUOR® bis(2-methoxyethyl)aminosulfur trifluoride-   DIAD Diisopropyl azodicarboxylate-   DIBAD Di-tert-butylazodicarboxylate-   diglyme 1-Methoxy-2-(2-methoxyethoxy)ethane-   DIPEA Diisopropylethylamine-   DMAP 4-Dimethylaminopyridine-   DMF Dimethyl formamide-   DMSO Dimethylsulfoxide-   DPPA Diphenylphosphoryl azide-   dppf 1,1′-Bis(diphenylphosphino)ferrocene-   EtOAc Ethyl acetate-   EtOH Ethanol-   EtI Iodoethane-   HATU (O-(7-azabenzotriazol-1-yl)-N,N,N′,N-tetramethyluronium-   hexafluorophosphate)-   HPLC High-performance liquid chromatography-   IPA Isopropyl alcohol-   KHDMS Potassium bis(trimethylsilyl)amide-   LAH lithium diisopropylamide-   LDA Lithium aluminiumhydride-   LHMDS Lithium bis(trimethylsilyl)amide-   MeOH Methanol-   MeI Iodomethane-   Ms Methanesulfonyl-   NBS N-Bromosuccinimide-   NIS N-Iodosuccinimide-   NMP N-Methyl-2-pyrrolidone-   PPh₃ or TPP Triphenylphosphine-   Pd(PPh₃)₄ Tetrakis(triphenylphosphine)palladium(0)-   Pd₂(dba)₃ Tris(dibenzylideneacetone)dipalladium(0)-   PdCl₂(dppf)    [1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II)-   PdCl₂(PPh₃)₂ Bis(triphenylphosphine)palladium(II) dichloride-   PTSA p-Toluenesulfonic acid-   Py Pyridine-   RT Room Temperature-   SFC Supercritical fluid chromatography-   TBAF Tetrabutylammonium fluoride-   TLC Thin layer chromatography-   TEMPO 2,2,6,6-Tetramethylpiperidinyloxy-   TEA or Et₃N Triethylamine-   TFA Trifluoroacetic acid-   Tf₂O Trifluoromethanesulfonic anhydride-   THF Tetrahydrofuran-   TBSCl or TBDMS-Cl tert-Butyldimethylsilyl chloride

Intermediate 1A: Ethyl 4-(4-fluorophenyl)-2,4-dioxobutanoate

To a solution of sodium ethoxide (351 mL, 21% in ethanol, 1629 mmol) wasadded 1-(4-fluorophenyl) ethanone (150 g, 1086 mmol) in ethanol (100 mL)at 0° C. under a nitrogen atmosphere and the resulting reaction mixturewas stirred at RT for 10 min. Diethyl oxalate (156 mL, 1140 mmol) inethanol (100 mL) was added and the reaction was allowed to stir at RTfor 12 h. The reaction mixture was cooled to 0° C. and acidified with1.5 N HCl and the solid was filtered and the filtrate was diluted withwater and extracted with DCM (3×750 mL). The combined organic layer waswashed with brine, dried over Na₂SO₄, filtered and concentrated toafford Intermediate 1A (180 g, 70%) which was taken to next step withoutfurther purification. MS(ES): m/z=237 [M−H]⁺; ¹H NMR (300 MHz, CDCl₃) δppm 15.2 (bs, 1H), 8.00-8.09 (m, 2H), 7.15-7.25 (m, 2H), 7.05 (s, 1H),4.42 (q, J=7.15 Hz, 2H), 1.43 (t, J=7.15 Hz, 3H).

Intermediate 1B: Ethyl 3-(4-fluorophenyl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate 1A (120 g, 504 mmol) in ethanol (1200 mL)was added hydrazine monohydrate (25.7 mL, 529 mmol) slowly and theresulting reaction mixture was refluxed for 1 h. The reaction mixturewas cooled to RT, poured into ice-cold water, and the resultant soliddried under vacuum to afford Intermediate 1B (80 g, 67%). MS(ES):m/z=235 [M+H]⁺; ¹H NMR (300 MHz, CDCl₃) δ ppm 7.75 (m, 2H), 7.12 (m,2H), 7.07 (s, 1H), 4.42 (q, J=7.2 Hz, 2H), 1.42 (t, J=7.2 Hz, 3H).

Intermediate 1C: Ethyl1-(2-bromoethyl)-3-(4-fluorophenyl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate 1B (135 g, 576 mmol) and potassiumcarbonate (159 g, 1153 mmol) in acetonitrile (1400 mL) was added1,2-dibromoethane (59.6 mL, 692 mmol) and the resulting reaction mixturewas refluxed for 4 h. Acetonitrile was removed under reduced pressureand the residue was diluted with water. The aqueous layer was extractedwith DCM (2×500 mL). The combined organic layer was washed with brine,dried over Na₂SO₄, filtered and concentrated. The residue was purifiedby ISCO using 880 g REDISEP® column and 1% methanol in chloroform aseluent. Combined fractions were concentrated to afford Intermediate 1C(90 g, 45%). MS(ES): m/z=343 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm7.91-7.97 (m, 2H), 7.41 (s, 1H), 7.24-7.30 (m, 2H), 4.96 (t, J=6.34 Hz,2H), 4.36 (q, J=7.11 Hz, 2H), 3.90 (t, J=6.34 Hz, 2H), 1.35 (t, J=7.12Hz, 3H).

Intermediate 1D:5-Benzyl-2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a solution of Intermediate 1C (80 g, 234 mmol) and potassium iodide(78 g, 469 mmol) in acetonitrile (800 mL) was added benzyl amine (28.2mL, 258 mmol) and the reaction mixture was stirred at 90° C. for 12 h.Acetonitrile was removed under reduced pressure, crude was diluted withwater and the aqueous layer was extracted with DCM (3×500 mL). Thecombined organic layer washed with brine, dried over Na₂SO₄, filteredand concentrated. The residue was purified by silica gel chromatography(120 g REDISEP® column, eluting with 1-2% methanol in chloroform).Collected fractions were concentrated together to afford Intermediate 1D(35 g, 46%). MS(ES): m/z=322 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm7.71-7.83 (m, 2H), 7.29-7.42 (m, 5H), 7.14 (s, 1H), 7.06-7.12 (m, 2H),4.78 (s, 2H), 4.32-4.40 (m, 2H), 3.63-3.75 (m, 2H).

Intermediate 1E:5-Benzyl-2-(4-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a solution of Intermediate 1D (23.00 g, 71.6 mmol) in THF (230 mL)under N₂ at −10° C. was added LAH (59.6 mL, 2.4 M solution in THF, 143mmol). The reaction mixture was allowed to stir at room temperature for12 h. The reaction mixture was quenched with ice-cold water and filteredthrough CELITE® pad and the filtrate was extracted with chloroform(3×150 mL). The combined organic layer was washed with brine, dried overNa₂SO₄, filtered and concentrated. The residue was triturated withdiethyl ether (2×150 mL) and the resulting solid was filtered, rinsedwith diethyl ether and dried to afford Intermediate 1E (17 g, 77%).MS(ES): m/z=308 [M+H]⁺; ¹H NMR (300 MHz, CDCl₃) δ ppm 7.67-7.82 (m, 2H),7.31-7.47 (m, 5H), 7.01-7.14 (m, 2H), 6.19 (s, 1H), 4.22 (t, J=4.2 Hz,2H), 3.73 (s, 2H), 3.70 (s, 2H), 2.97 (t, J=5.6 Hz, 2H).

Intermediate 1F:2-(4-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a degassed solution of Intermediate 1E (17 g, 55.3 mmol) in methanol(170 mL) was added 10% palladium on carbon (2.94 g, 2.77 mmol) andstirred under H₂ atmospheric pressure for 3 h. The reaction mixture wasfiltered through CELITE® pad, washed with methanol (500 mL) andconcentrated. The residue was triturated with diethyl ether (2×100 mL)and the resulting solid was filtered, rinsed with diethyl ether (200 mL)and dried under vacuum to afford Intermediate 1F (9 g, 75%). MS(ES):m/z=218 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.73-7.87 (m, 2H),7.13-7.28 (m, 2H), 6.43 (s, 1H), 4.02 (t, J=5.57 Hz, 2H), 3.94 (s, 2H),3.16 (t, J=5.57 Hz, 2H).

Intermediate 1G: tert-Butyl2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 1F (9.50 g, 43.7 mmol) andtriethylamine (18.29 mL, 131 mmol) in DCM (80 mL) was added Boc₂O (19.09g, 87 mmol) and DMAP (0.534 g, 4.37 mmol) and the reaction mixture wasstirred at RT for 12 h. DCM was removed under reduced pressure and theresidue was purified by ISCO using 120 g REDISEP® column and 1-2%methanol in chloroform as eluent. Collected fractions were concentratedtogether to afford Intermediate 1G (11 g, 79%). MS(ES): m/z=318 [M+H]⁺;¹H NMR (400 MHz, CDCl₃) δ ppm 7.70-7.75 (m, 2H), 7.02-7.12 (m, 2H), 6.31(s, 1H), 4.68 (s, 2H), 4.21 (t, J=5.4 Hz, 2H), 3.92 (t, J=5.7 Hz, 2H),1.50 (s, 9H).

Intermediate 1H: tert-Butyl2-(3-fluorophenyl)-3-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 1G (5.0 g, 15.76 mmol) in dichloromethane(25 mL) was added NIS (5.32 g, 23.63 mmol) and stirred at roomtemperature for 1 h. The reaction mixture was diluted with DCM andwashed with water. The organic layer was dried over Na₂SO₄ andconcentrated. The crude product was purified by ISCO using 40 g silicacolumn using 1-2% methanol in chloroform as solvent. Collected fractionswere concentrated together to afford Intermediate 1H (6 g, 86%) as whitesolid. MS(ES): m/z=444 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.79 (m,2H), 7.11 (m, 2H), 4.55 (s, 2H), 4.20 (t, J=5.36 Hz, 2H), 3.92 (t,J=5.30 Hz, 2H), 1.52 (s, 9H).

Intermediate 11: tert-Butyl3-cyano-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 1H (6.0 g, 13.54 mmol) in DMF (10 mL) wasadded zinc cyanide (2.066 g, 17.60 mmol) and zinc (0.265 g, 4.06 mmol)to give a brown suspension. The reaction mixture was degassed undernitrogen for 15 min, added Pd₂(dba)₃ (0.620 g, 0.677 mmol), dppf (0.750g, 1.354 mmol), and stirred at 90° C. for 18 h. The reaction mixture wasquenched with water and the aqueous layer was extracted with ethylacetate (3×50 mL). Combined organic layer was washed with aqueousammonia (2×50 mL), water, dried over Na₂SO₄, filtered and concentratedto afford crude Intermediate 11 as a brown gummy solid. The residue waspurified by ISCO using 40 g REDISEP® silica gel column eluting with 3%MeOH in chloroform. The collected fractions were concentrated togetherto afford Intermediate 1I (3 g, 64%) as white solid. MS(ES): m/z=343[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.84-7.94 (m, 2H), 7.34-7.44 (m,2H), 4.78 (s, 2H), 4.23 (t, J=5.36 Hz, 2H), 3.87 (t, J=5.45 Hz, 2H),1.46 (s, 9H).

Intermediate 1J: tert-Butyl3-carbamoyl-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 11 (3.0 g, 8.76 mmol) in MeOH (10 mL) wasadded NaOH (10 mL, 10% NaOH solution, 25 mmol) and H₂O₂ (2.5 mL, 30% w/vin H₂O, 22 mmol). The reaction mixture was stirred at room temperaturefor 3 h. Methanol was removed from the reaction mixture and the residuewas diluted with 10 mL of water and extracted with ethyl acetate (3×15mL). The combined organic layer was washed with water (15 mL), brine,dried over Na₂SO₄, filtered and concentrated to afford crudeIntermediate 1J (3 g, 95%) as an off-white solid, which was taken to thenext step without further purification. MS(ES): m/z=361 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 7.66-7.71 (m, 2H), 7.22-7.30 (m, 2H), 6.94 (bs,1H), 4.75 (s, 2H), 4.16 (t, J=5.40 Hz, 2H), 3.85 (t, J=5.36 Hz, 2H),1.46 (s, 9H).

Intermediate 1K:2-(3-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 1J (3.0 g, 8.32 mmol) in dichloromethane(20 mL) was added TFA (10.26 mL, 133 mmol) dropwise at 0° C. and stirredat room temperature for 3 h. Volatiles were removed, and the residue wasquenched with 10% NaHCO₃ solution. The off-white solid product 1K (2 g,92%) was filtered and dried under vacuum and was used in the next stepwithout further purification. MS(ES): m/z=261 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.66-7.73 (m, 2H), 7.22-7.25 (m, 2H), 7.21 (bs, 1H), 7.20(bs, 1H), 3.98-4.05 (m, 4H), 3.13 (bs, 2H), 2.63 (s, 1H).

Compound 1:N⁵-(tert-Butyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 1K (30 mg, 0.115 mmol) in DMF (1 mL) wasadded tert-butylisocyanate (28.6 mg, 0.288 mmol) at 0° C. The reactionmixture was stirred at room temperature for 3 h. The reaction mixturewas quenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with water (2×5 mL), brine, dried overNa₂SO₄ and concentrated to afford the crude product as brown semi-solid.The residue was dissolved in a mixture of acetonitrile and methanol andwas purified via preparative HPLC. Fractions containing the desiredproduct (0.01 g, 24%) were combined and dried under vacuum. MS(ES):m/z=360 [M+H]⁺; HPLC Ret. Time 6.66 min. and 6.14 min. (HPLC Methods Aand B); ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.69 (m, 2H), 7.25 (m, 2H), 7.25(bs, 1H), 6.98 (bs, 1H), 6.26 (s, 1H), 4.69 (s, 2H), 4.11 (t, J=5.7 Hz,2H), 3.80 (t, J=5.7 Hz, 2H), 1.29 (s, 9H).

The Compounds shown in Table 1 have been prepared similar to 1 usingIntermediate 1K and various isocyanate.

TABLE 1 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Method 2

2-(4-Fluorophenyl)-N⁵-isopropyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 345 6.606 6.184 AB 3

N⁵-Cyclohexyl-2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 386 7.948 7.838 AB

Intermediate 4A: Ethyl 4-(3-fluorophenyl)-2,4-dioxobutanoate

To a solution of sodium ethoxide (123 g, 362 mmol) in ethanol (300 mL)at 0° C. was added a solution of diethyl oxalate (49.4 mL, 362 mmol) inethanol (25 mL) and the resulting solution was stirred for 10 min.1-(3-Fluorophenyl)ethanone (50 g, 362 mmol) in ethanol (25 mL) was addedand the reaction mixture was stirred at room temperature for 16 h.Ethanol was distilled off under reduced pressure and the residueobtained was quenched with ice-cold water and the brown product wasfiltered. This crude product was purified by ISCO using 220 g silica gelcolumn and 20% ethyl acetate in hexane as eluent. The combined fractionswere concentrated to afford Intermediate 4A (62.5 g, 73%). MS(ES):m/z=239 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 15.13 (bs, 1H), 7.77-7.83(m, 1H), 7.67-7.73 (m, 1H), 7.51 (td, J=8.03, 5.48 Hz, 1H), 7.29-7.37(m, 1H), 7.28 (s, 1H), 4.43 (q, J=7.18 Hz, 2H), 1.40-1.47 (m, 3H).

Intermediate 4B: Ethyl 3-(3-fluorophenyl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate 4A (100 g, 420 mmol) in ethanol (250 mL)was added hydrazine (13.83 mL, 441 mmol) in ethanol (250 mL) to give abrown solution. The reaction mixture was stirred at 80° C. for 2 h.Ethanol was removed under reduced pressure and the residue was dilutedwith water and extracted with ethyl acetate (3×100 mL). The combinedorganic layer was washed with water (2×100 mL), brine, dried overNa₂SO₄, filtered and concentrated under reduced pressure. The brownsolid thus obtained was purified by ISCO using 20% ethyl acetate inhexane as eluent. The combined fractions were concentrated to affordIntermediate 4B (85 g, 86%) MS(ES): m/z=233 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 14.06 (bs, 1H), 7.68-7.75 (m, 2H), 7.45-7.55 (m, 1H),7.36 (s, 1H), 7.20 (t, J=7.53 Hz, 1H), 4.34 (q, J=7.03 Hz, 2H), 1.34 (t,J=7.03 Hz, 3H).

Intermediate 4C: Ethyl1-(2-((tert-butoxycarbonyl)amino)ethyl)-3-(3-fluorophenyl)-1H-pyrazole-5-carboxylate

A solution of 4B (12 g, 51.2 mmol) and PPh₃ (20.16 g, 77 mmol) in THF(10 mL) at 0° C. was added DIAD (14.94 mL, 77 mmol) in THF (10 mL) andthe resulting reaction mixture was stirred at the same temperature for30 min. tert-Butyl (2-hydroxyethyl) carbamate (9.91 g, 61.5 mmol) wasthen added and the reaction mixture was stirred at room temperature for2 h. The volatiles were evaporated from the reaction mixture underreduced pressure and the resultant residue was quenched with ice. Theaqueous layer was extracted with ethyl acetate (3×1000 mL). The combinedorganic layer was washed with 1.5 N HCl (2×100 mL), brine, dried overNa₂SO₄, filtered and concentrated to afford the crude product, which waspurified by ISCO (5:1 Hex/EtOAc; 120 g column). Collected fractions wereconcentrated together to afford pale yellow solid 4C (16 g, 83%).MS(ES): m/z=378 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.54-7.59 (m, 1H),7.48-7.54 (m, 1H), 7.36 (td, J=8.03, 6.02 Hz, 1H), 7.13 (s, 1H),6.98-7.05 (m, 1H), 6.32 (bs, 1H), 4.98 (quin, J=6.27 Hz, 2H), 4.37 (q,J=7.19 Hz, 2H), 3.64 (d, J=5.02 Hz, 2H), 1.39-1.41 (m, 3H), 1.27 (s,9H).

Intermediate 4D:2-(3-Fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

A 250 mL round-bottomed flask was charged with 4C (14 g, 37.1 mmol) andHCl in 1,4-dioxane (185 mL, 185 mmol) to give a yellow solution. Thereaction mixture was stirred at room temperature for 2 h. The reactionmixture was concentrated under reduced pressure and to this residue wasadded 10% NaHCO₃ slowly until pH became 8.0. The aqueous layer wasextracted with ethyl acetate (3×100 mL) and the combined organic layerwas washed with water (2×100 mL), brine, dried over Na₂SO₄, filtered andconcentrated to give the desired product 4D as an off-white solid, whichwas used in the next step without purification. MS(ES): m/z=231 [M+H]⁺;¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.26 (bs, 1H), 7.70-7.75 (m, 1H),7.63-7.69 (m, 1H), 7.47 (td, J=8.03, 6.53 Hz, 1H), 7.11-7.20 (m, 1H),4.32-4.40 (m, 2H), 3.65 (tt, J=4.64, 3.14 Hz, 2H).

Intermediate 4E:2-(3-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a solution of Intermediate 4D (4.5 g, 19.46 mmol) in THF (100 mL) at−10° C. was added LAH (16.22 mL, 2.4 M in THF, 38.9 mmol) dropwise. Thereaction mixture was stirred at room temperature for 16 h, was quenchedwith saturated NH₄Cl at 0° C. and the aqueous layer was extracted withethyl acetate (3×50 mL). The combined organic layer was washed withwater (2×50 mL), brine, filtered through CELITE®, dried over Na₂SO₄ andconcentrated to afford crude Compound 4E as an off-white solid (4 g,90%), which was used in the next step without purification. MS(ES):m/z=218 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.53-7.59 (m, 1H), 7.50(ddd, J=10.29, 2.55, 1.51 Hz, 1H), 7.35 (td, J=7.93, 6.04 Hz, 1H), 6.99(tdd, J=8.40, 8.40, 2.64, 0.94 Hz, 1H), 6.29 (s, 1H), 4.19 (t, J=5.67Hz, 2H), 4.12 (s, 2H), 3.33-3.40 (m, 2H).

Intermediate 4F: tert-Butyl2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 4E (4.0 g, 20.71 mmol) in dichloromethane(150 mL) was added triethylamine (7.70 mL, 55.2 mmol), and DMAP (0.225g, 1.841 mmol) to give a colorless solution. The reaction was cooled to0° C. and Boc₂O (4.82 g, 22.10 mmol) was then added and the reactionmixture was stirred at room temperature for 2 h. The reaction mixturewas diluted with dichloromethane (100 mL), washed with water (2×100 mL),dried over Na₂SO₄, filtered and concentrated to afford the crudecompound as an off-white solid. The crude product was purified by silicagel chromatography (24 g REDISEP® column, eluting with 30% ethyl acetatein hexane). Collected fractions were concentrated together to affordIntermediate 4F (5 g, 86%) as white solid. MS(ES): m/z=318 [M+H]⁺; ¹HNMR (400 MHz, CDCl₃) δ ppm 7.53 (dt, J=7.53, 1.25 Hz, 1H), 7.47 (ddd,J=10.54, 2.51, 1.51 Hz, 1H), 7.31-7.38 (m, 1H), 6.95-7.03 (m, 1H), 6.35(s, 1H), 4.69 (s, 2H), 4.22 (t, J=5.27 Hz, 2H), 3.92 (t, J=5.52 Hz, 2H),1.51 (s, 9H).

Intermediate 4G: tert-Butyl2-(3-fluorophenyl)-3-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 4F (5.0 g, 15.76 mmol) in dichloromethane(25 mL) was added NIS (5.32 g, 23.63 mmol) and stirred at roomtemperature for 2 h. The reaction mixture was diluted with DCM andwashed with water. The organic layer was dried over Na₂SO₄ andconcentrated to afford Intermediate 4G (6 g, 86%) as a colorlesssemi-solid which was used in the next step without any purification.MS(ES): m/z=444 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.61-7.66 (m, 1H),7.56 (ddd, J=10.04, 2.51, 1.51 Hz, 1H), 7.39 (td, J=8.03, 6.02 Hz, 1H),7.04-7.10 (m, 1H), 4.56 (bs, 2H), 4.22 (t, J=5.52 Hz, 2H), 3.92 (t,J=5.52 Hz, 2H), 1.52 (s, 9H).

Intermediate 4H: tert-Butyl3-cyano-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 4G (5.0 g, 11.28 mmol) in DMF (50 mL) wasadded zinc cyanide (1.722 g, 14.66 mmol) and zinc (0.221 g, 3.38 mmol)to give a brown suspension. The reaction mixture was degassed undernitrogen for 15 min and added Pd₂(dba)₃ (0.516 g, 0.564 mmol) and dppf(0.625 g, 1.128 mmol). The reaction mixture was stirred at 90° C. for 18h. The reaction mixture was quenched with water and the aqueous layerwas extracted with ethyl acetate (3×50 mL). The combined organic layerwas washed with aqueous ammonia (2×50 mL), water, dried over Na₂SO₄,filtered and concentrated to afford the crude product as brownsemi-solid. The crude was purified by silica gel chromatography (40 gREDISEP® column, eluting with 50% EtOAc in hexane). Collected fractionsconcentrated together to afford Intermediate 4H (3 g, 78%) as whitesolid. MS(ES): m/z=343 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.73-7.78(m, 1H), 7.62-7.68 (m, 1H), 7.43 (td, J=8.03, 5.52 Hz, 1H), 7.08-7.15(m, 1H), 4.82 (s, 2H), 4.24 (t, J=5.52 Hz, 2H), 3.96 (t, J=5.27 Hz, 2H),1.52 (s, 9H).

Intermediate 4I: tert-Butyl3-carbamoyl-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 4H (3.0 g, 8.76 mmol) in MeOH (10 mL) wasadded NaOH (10 ml, 10% NaOH solution, 25 mmol) and H₂O₂(2.5 mL, 30% w/vin H₂O, 22 mmol). The reaction mixture was stirred at room temperaturefor 3 h. Methanol was removed from the reaction mixture and the residuewas diluted with 10 mL of water and extracted with ethyl acetate (3×15mL). The combined organic layer was washed with water (15 mL), brine,dried over Na₂SO₄, filtered and concentrated to afford crudeIntermediate 4I (3 g, 95%) as an off-white solid, which was used in thenext step without further purification. MS(ES): m/z=361 [M+H]⁺; ¹H NMR(300 MHz, DMSO-d₆) δ ppm 7.53 (d, J=1.51 Hz, 1H), 7.43-7.50 (m, 2H),7.32 (bs, 1H), 7.18-7.24 (m, 1H), 7.14 (bs, 1H), 4.75 (s, 2H), 4.17 (t,J=5.27 Hz, 2H), 3.85 (t, J=5.52 Hz, 2H), 1.41-1.49 (m, 8H).

Intermediate 4J:2-(3-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 4I (3.0 g, 8.32 mmol) in dichloromethane(20 mL) at 0° C. was added TFA (10.26 mL, 133 mmol) dropwise and stirredat room temperature for 1 h. TFA was removed from the reaction mixtureand the residue was quenched with 10% NaHCO₃ solution. The solid wasfiltered to obtain Intermediate 4J (2 g, 92%) as an off-white solid,which was used in the next step without purification. MS(ES): m/z=261[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.52-7.57 (m, 1H), 7.46-7.52 (m,1H), 7.40-7.46 (m, 1H), 7.14-7.27 (m, 2H), 7.08 (bs, 1H), 4.03 (d,J=5.02 Hz, 4H), 3.13 (d, J=5.02 Hz, 2H), 2.64 (d, J=6.02 Hz, 1H).

Compound 4:N⁵-(tert-Butyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 4J (50 mg, 0.192 mmol) in DMF (2 mL) at 0°C. was added tert-butylisocyanate (38 mg, 0.384 mmol). The reactionmixture was stirred at room temperature for 12 h, quenched with waterand extracted with ethyl acetate (3×5 mL). The combined organic layerwas washed with water (2×5 mL), brine, dried over Na₂SO₄, filtered andconcentrated to afford the crude product as brown semi-solid. Theresidue was further purified by preparative HPLC to afford pure product4 as white powder (40 mg, 57%). MS(ES): m/z=360 [M+H]⁺; HPLC Ret. Time7.35 min. and 7.33 min. (HPLC Methods A and B); ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.51-7.54 (m, 1H), 7.47-7.50 (m, 1H), 7.44-7.46 (m, 1H),7.18-7.24 (m, 1H), 4.74 (s, 2H), 4.17 (t, J=5.52 Hz, 2H), 3.85 (t,J=5.52 Hz, 2H), 1.45-1.48 (s, 9H).

General Methods to Synthesize Ureas: Method A:

To a solution of Intermediate 4J (30 mg, 0.115 mmol) in DMF (1 mL) wasadded the corresponding isocyanate (0.288 mmol) at 0° C. and thereaction mixture was stirred at room temperature for 3 h. The reactionmixture was quenched with water and extracted with ethyl acetate (3×5mL). The combined organic layer was washed with water (2×5 mL), brine,dried over Na₂SO₄, filtered and concentrated to afford the crudeproduct. The crude product was further purified by preparative HPLC.

Method B:

To a solution of primary amine (0.192 mmol) and triethylamine (0.480mmol) in tetrahydrofuran (3 mL) at 0° C. was added triphosgene (0.096mmol) and the reaction mixture stirred for 30 min. at the sametemperature. Intermediate 4J (25 mg, 0.096 mmol) in THF was added andthe solution was stirred at room temperature for 2 h. Reaction progresswas monitored by TLC. The reaction mixture was quenched with water andextracted with ethyl acetate (3×5 mL). The combined organic layer waswashed with 10% NaHCO₃ (2×5 mL), water, dried over Na₂SO₄ andconcentrated to afford the crude product as an off-white solid. Thecrude product was further purified by preparative HPLC.

Method C:

To a solution of acid (0.192 mmol) and TEA (0.288 mmol) in toluene (3mL) was added diphenylphosphoryl azide (0.192 mmol) to give a colorlesssolution. The reaction mixture was stirred at 90° C. for 1.5 h andcooled to RT. Intermediate 4J (25 mg, 0.096 mmol) in THF was added andthe reaction mixture was stirred at 60° C. for 4 h. Reaction progresswas monitored by TLC. The reaction mixture was quenched with water andextracted with ethyl acetate (3×5 mL). The combined organic layer waswashed with 10% NaHCO₃ (2×5 mL), water, dried over Na₂SO₄ andconcentrated to afford the crude product as an off-white solid. Thecrude product was further purified by preparative HPLC.

Method D:

To a solution of primary amine (0.192 mmol) and triethylamine (0.480mmol) in tetrahydrofuran (3 mL) at 0° C. were added phenyl chloroformate(0.096 mmol) and the reaction mixture stirred for 60 min. at RT. Thereaction mixture was quenched with water and the phenyl carbamate formedwas extracted and the Intermediate 4J (25 mg, 0.096 mmol) in THF wasadded to the extract and the resulting solution was stirred at roomtemperature for 2 h. Reaction progress was monitored by TLC. Thereaction mixture was quenched with water and extracted with ethylacetate (3×5 mL). The combined organic layer was washed with 10% NaHCO₃(2×5 mL), water, dried over Na₂SO₄ and concentrated to afford the crudeproduct as an off-white solid. The crude product was further purified bypreparative HPLC.

The Compounds described in Table 2 were synthesized analogous toCompound 4 by reacting Compound 4J with corresponding reagents.

TABLE 2 Ret Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method 5

2-(3-Fluorophenyl)-N⁵- isopropyl-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 346  6.41   5.79  A B 6

N⁵-Cyclohexyl-2-(3- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 386 14.34  13.57  C D 7

N⁵-Cyclopropyl-2-(3- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 344  6.06   5.39  A B 8

N⁵-Cyclobutyl-2-(3- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 358  6.89   6.48  A B 9

N⁵-Cyclopentyl-2-(3- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 372  7.43   6.95  A B 10

N⁵-(4-Chlorophenyl)-2- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 414  8.87   8.36  A B 11

2-(3-Fluorophenyl)-N⁵-(1- methylcyclopropyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide C 358  6.46   6.06  A B 12

N⁵-(4,4- Difluorocyclohexyl)-2- (3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 422  7.42  6.63  A B 13

2-(3-Fluorophenyl)-N⁵- (1,1,1-trifluoro-2- methylpropan-2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 414  7.96  7.52  A B 14

2-(3-Fluorophenyl)-N⁵- (3,3,3-trifluoropropyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide C 400  7.19   6.79  A B 15

2-(3-Fluorophenyl)-N⁵- (2,2,2-trifluoroethyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide C 386  7.00  6.58  A B 16

2-(3-Fluorophenyl)-N⁵- (4-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 398  7.99   7.62  A B 17

2-(3-Fluorophenyl)-N⁵- (2-(4-fluorophenyl) propan-2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 440  8.82  8.34  A B 18

2-(3-Fluorophenyl)-N⁵- (2,2,6,6- tetramethylpiperidin-4-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide B 443 9.09  10.11  C D 19

N⁵-(Adamantan-2-yl)-2- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 348  9.70   8.89  A B 20

2-(3-Fluorophenyl)-N⁵- (1-(trifluoromethyl) cyclopropyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H- dicarboxamide B 412  7.25  6.77  A B 21

2-(3-Fluorophenyl)-N⁵- (4-(trifluoromethyl) phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 448  9.55  8.88  A B 22

N⁵-(Adamantan-1-yl)-2- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 438  9.93   9.17  A B 23

2-(3-Fluorophenyl)-N⁵- ((2R,5S)-octahydro-2,5- methanopentalen-6a-yl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide C 424  9.30  8.62  A B 24

N⁵-(Bicyclo[1.1.1] pentan-1-yl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 370  7.16  6.91  A B 25

2-(3-Fluorophenyl)-N⁵- (2-phenylpropan-2-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 422  8.53   8.10  A B 26

N⁵-(2,5-Difluorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 416  8.21   7.87  A B 27

2-(3-Fluorophenyl)-N⁵- (2,3,5-trifluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 434  9.69   9.03  A B 28

N⁵-(2,3-Difluorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 416  8.05   7.76  A B 29

N⁵-(3,4-Difluorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 416  8.72   8.25  A B 30

N⁵-(2,4-Difluorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 416  7.88   7.55  A B 31

N⁵-(3,5-Difluorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 416  9.04   8.54  A B 32

N⁵-(2-Chloro-4- fluorophenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 432  8.29  7.96  A B 33

N⁵-(5-Chloro-2- fluorophenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 432  8.79  8.41  A B 34

N⁵-(2-Chloro-5- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 482  9.25  9.83  B A 35

N⁵-(4-Chloro-3- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 482  9.64 10.37  B A 36

N⁵-(2-Fluoro-3- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 466  8.79  9.26  B A 37

2-(3-Fluorophenyl)-N⁵- (4-(trifluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 464  9.93  9.67  B A 38

N⁵-(4-Cyano-3- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 473  9.03  9.49  B A 39

N⁵-(2-Fluoro-5- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 466  9.71  9.32  B A 40

2-(3-Fluorophenyl)-N⁵- (2,4,6-trifluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 434  8.39   7.76  B A 41

2-(3-Fluorophenyl)-N⁵-(3- hydroxyadamantan-1-yl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 454  7.22  6.70  B A 42

N⁵-(4-Fluorophenethyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 426  1.276 E 43

N⁵-(2,4-Dichlorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 449  1.441 E 44

2-(3-Fluorophenyl)-N⁵- ((1R,2S)-2- phenylcyclopropyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 420  1.325 E 45

N⁵-(2,4-Dichlorobenzyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 464  1.483 E 46

N⁵-(3,4-Dichlorobenzyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 463  1.484 E 47

2-(3-Fluorophenyl)-N⁵- (4-methoxyphenethyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 438  1.230 E 48

2-(3-Fluorophenyl)-N⁵- (2-(trifluoromethyl) phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide A 448  1.269 E 49

N⁵-(3,4-Dichlorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 448  1.572 E 50

2-(3-Fluorophenyl)-N⁵- (3-(trifluoromethyl) phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide A 448  1.516 E 51

2-(3-Fluorophenyl)-N⁵- (4-methoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 410  1.134 E 52

2-(3-Fluorophenyl)-N⁵- (naphthalen-1-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 430  1.303 E 53

N⁵-(3,5- Bis(trifluoromethyl) phenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 516  1.837 E 54

N⁵-(3-Cyanophenyl)-2- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 405  1.190 E 55

N⁵-(3,5-Dichlorophenyl)- 2-(3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 449  1.64  E 56

N⁵-(3,5- Dimethoxyphenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 440  1.248 E 57

N⁵-(4-Chloro-2- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 482  1.466 E 58

2-(3-Fluorophenyl)-N⁵- (4-phenoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 472  1.613 E 59

2-(3-Fluorophenyl)-N⁵- (naphthalen-2-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 430  1.459 E 60

N⁵-(3-Chloro-4- fluorophenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 432  1.424 E 61

N⁵-(4-Cyanophenyl)-2- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 405  1.186 E 62

N⁵-([1,1′-Biphenyl]-4- yl)-2-(3-fluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 456  1.621 E 63

N⁵-(4-(tert-Butyl) phenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 436  1.657 E 64

N⁵-(2-Chloro-4- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 482  1.610 E 65

N⁵-(2-Chloro-6- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 482  1.259 E 66

N⁵-(3,4- Dimethoxyphenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 440  1.066 E 67

N⁵-(3-Chloro-4- methoxyphenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 444  1.310 E 68

2-(3-Fluorophenyl)-N⁵- (pyridin-3-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide A 381  0.886 E 69

N⁵-(3-Fluoro-5- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide A 466  1.631 E 70

2-(3-Fluorophenyl)-N⁵- (3,4,5-trifluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 434 14.7   13.49  F G 71

N⁵-(3-Fluoro-4- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 466 16.11 14.73  F G 72

2-(3-Fluorophenyl)-N⁵- (3-(trifluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 464 15.59 14.07  F G 73

2-(3-Fluorophenyl)-N⁵- (3-methoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 410 11.76  11.05  F G 74

N⁵-(2,2-Difluorobenzo [d][1,3]dioxol-5-yl)-2- (3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 460 14.82 13.56  F G 75

2-(3-Fluorophenyl)-N⁵- (6-methoxypyrimidin- 4-yl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 412 12.78 12.18  C D 76

N⁵-(3-Chloro-4- (difluoromethoxy) phenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 480  9.16  9.59  B A 77

N⁵,2-Bis(3-fluorophenyl)- 6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)-dicarboxamide B 398 16.34  15.21  C D 78

2-(3-Fluorophenyl)-N⁵- (3-methoxy-4- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 478 14.53 13.53  F G 79

N⁵-(3-Chloro-4- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 482 15.22 16.90  G F 80

N⁵-(4-Fluoro-3- (trifluoromethyl)phenyl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 466 15.43 13.97  F G 81

N⁵-(3,5- Dimethyladamantan-1- yl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide C 466 18.48 16.03  C D 82

2-(3-Fluorophenyl)-N⁵- (pyridazin-4-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 382  9.58   8.68  D C 83

2-(3-Fluorophenyl)-N⁵- (6-methylpyridazin-3-yl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide D 396  9.79  9.27  D C 84

2-(3-Fluorophenyl)-N⁵- (pyrimidin-5-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 382 10.43  10.80  D C 85

N⁵-(6-Chloropyridin-3- yl)-2-(3-fluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 415  7.21   7.31  B A 86

2-(3-Fluorophenyl)-N⁵- (6-methylpyridin-3-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 395  8.46   9.74  C D 87

2-(3-Fluorophenyl)-N⁵- (6-fluoropyridin-3-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 399  6.79   6.71  A B 88

2-(3-Fluorophenyl)-N⁵- (6-hydroxypyridin-3-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 397  9.57   9.86  D C 89

N⁵-(4-(Difluoromethoxy) phenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide B 446  8.53  8.82  B A 90

N⁵-(2-Chloropyridin-4- yl)-2-(3-fluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 415  7.22   7.10  A B 91

2-(3-Fluorophenyl)-N⁵- (pyridazin-3-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 382 10.07   9.86  D C 92

2-(3-Fluorophenyl)-N⁵- (pyridin-4-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide D 381 8.81 8.49 A B 93

2-(3-Fluorophenyl)-N⁵-(3- (methylsulfonyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide A 458 13.7113.43 C D 94

N⁵-(3-Fluoro-5- hydroxyadamantan-1-yl)- 2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide C 472 13.06 12.08C D 95

N⁵-(3-Fluoroadamantan- 1-yl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide C 456 8.329.03 B A 96

2-(3-Fluorophenyl)-N⁵- (1-methyl-1H-pyrazol- 5-yl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide B 384 10.41 10.56D C

Intermediate 97A: tert-Butyl4-(3-carbamoyl-2-(3-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-5-carboxamido)piperidine-1-carboxylate

To a solution of tert-butyl 4-aminopiperidine-1-carboxylate (308 mg,1.537 mmol) and TEA (0.536 mL, 3.84 mmol) in THF (3 mL) was addedtriphosgene (228 mg, 0.768 mmol) at 0° C. and stirred for 30 min. at thesame temperature. A solution of Intermediate 4J (200 mg, 0.768 mmol) inTHF was added and the reaction mixture was stirred at room temperaturefor 2 h. The reaction mixture was quenched with water and the aqueouslayer was extracted with ethyl acetate (3×5 mL). The combined organiclayer was washed with 10% NaHCO₃ (2×5 mL), water, dried over Na₂SO₄,filtered and concentrated. The crude product was purified using reversephase HPLC method to afford Intermediate 97A (300 mg, 80%) as a whitesolid. MS(ES): m/z=487 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.51-7.55(m, 1H), 7.42-7.51 (m, 2H), 7.35 (bs, 1H), 7.22 (m, 1H), 7.15 (bs, 1H),6.70 (d, J=7.53 Hz, 1H), 4.72 (s, 2H), 4.14 (t, J=4.8 Hz, 2H), 3.89 (m,2H), 3.84 (t, J=4.4 Hz, 2H), 3.65 (m, 1H), 2.85-2.78 (m, 2H), 1.75 (m,2H), 1.41 (s, 9H), 1.32 (m, 2H).

Intermediate 97B:2-(3-Fluorophenyl)-N⁵-(piperidin-4-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 97A (300 mg, 0.617 mmol) in DCM (3 mL) wasadded TFA (0.238 mL, 3.08 mmol) at 0° C. and the reaction mixture wasstirred at room temperature for 4 h. The reaction mixture wasconcentrated and the resultant residue was basified to pH ˜8.0 with 10%NaHCO₃ solution. The aqueous layer was extracted with DCM (3×5 mL) andthe combined organic layer was washed with water (2×5 mL), brine, driedover Na₂SO₄, filtered and concentrated to afford Intermediate 97B (200mg, 80%) as white solid. MS(ES): m/z=387 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) ppm 8.50 (bs, 1H), 7.46 (m, 3H), 7.32 (bs, 1H), 7.21 (m, 1H),7.11 (bs, 1H), 6.86 (d, J=7.03 Hz, 1H), 4.74 (s, 2H), 4.15 (t, J=5.27Hz, 2H), 3.86 (t, J=5.27 Hz, 2H), 3.72 (m, 1H), 3.27 (s, 2H), 2.96 (m,2H), 1.93 (m, 2H), 1.54 (m, 2H).

Example 97 Method A Amides

To a solution of Intermediate 97B (0.025 g, 0.065 mmol) in dry DMF (0.8mL) was added HATU (0.049 g, 0.129 mmol) and DIPEA (0.034 mL, 0.194mmol). To this was added acetic acid (7 μL, 0.129 mmol) and the reactionwas stirred at RT for 16 h. The reaction was monitored by TLC, whichshowed the completion of the reaction. The DMF was removed under highvacuum. The reaction mixture was quenched with 10% sodium bicarbonatesolution and extracted with DCM (3×30 mL). The combined organic layerwas washed with sodium bicarbonate solution, water, and brine, driedover Na₂SO₄, filtered and concentrated to give the crude product. Thecrude product was further purified by preparative HPLC purification toafford the pure product 97 as a white solid (9 mg, 32%). MS(ES): m/z=429[M+H]⁺; HPLC Ret. Time 10.76 min. and 10.46 min. (HPLC Methods C and D);¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.51-7.56 (m, 1H), 7.42-7.51 (m, 2H),7.34 (br. s., 1H), 7.17-7.23 (m, 1H), 7.14 (br. s., 1H), 6.67-6.75 (m,1H), 4.73 (s, 2H), 4.30 (d, J=13.05 Hz, 1H), 4.14 (t, J=5.27 Hz, 2H),3.84 (t, J=5.27 Hz, 2H), 3.79 (d, J=14.56 Hz, 1H), 3.66-3.75 (m, 1H),3.08 (t, J=11.29 Hz, 1H), 2.57-2.67 (m, 1H), 2.00 (s, 3H), 1.72-1.86 (m,2H), 1.35-1.44 (m, 1H), 1.27-1.34 (m, 1H).

Method B Sulfonamides

To a solution of Intermediate 97B (0.025 g, 0.065 mmol) and DIPEA (0.034mL, 0.194 mmol) in dry DCM (0.8 mL) was added cyclopropanesulfonylchloride (0.018 g, 0.129 mmol) and the reaction was stirred at RT for 16hours. The reaction mixture was quenched with 10% sodium bicarbonatesolution and extracted with DCM (3×30 ml). The combined organic layerwas washed with sodium bicarbonate solution, water, and brine, driedover Na₂SO₄, filtered and concentrated to furnish the crude product. Thecrude product was further purified by preparative HPLC purification

Method C (Reductive Amination)

To a solution of Intermediate 97B (0.025 g, 0.065 mmol) in dry DCM (0.5mL) and methanol (0.5 mL) was added 3,3,3-trifluoropropanal (0.014 g,0.129 mmol) and stirred at RT for 30 minutes. To this mixture, sodiumcyanoborohydride (8.13 mg, 0.129 mmol) was added, the reaction mixturewas stirred at RT for 3 h and the solvent was removed under reducedpressure. The residue was partitioned between ethyl acetate and water,layers separated, and the aqueous layer was extracted with EtOAc (3×10mL). The combined organic layer was washed with water, brine, dried overNa₂SO₄ and concentrated under reduced pressure to afford the crudeproduct, which was further purified by preparative HPLC purification.

Method D (Carbamates)

Step 1:

Pyridin-2-yl (1,1,1-trifluoro-2-methylpropan-2-yl)carbonate: To asolution of di(pyridin-2-yl) carbonate (250 mg, 1.156 mmol) in DCM (5mL) was added DMAP (706 mg, 5.78 mmol) followed by DIPEA (0.202 mL,1.156 mmol) and 1,1,1-trifluoro-2-methylpropan-2-ol (148 mg, 1.156mmol). The reaction mixture was stirred at RT overnight, concentratedand the crude was taken to the next step without further purification.

Step 2:

To a stirred solution of 97B (0.015 g, 0.039 mmol) in DCM (1.500 mL) wasadded DIPEA (0.020 mL, 0.116 mmol) and pyridin-2-yl(1,1,1-trifluoro-2-methylpropan-2-yl)carbonate (9.67 mg, 0.039 mmol) andresulting mixture was stirred at 25° C. overnight. The reaction mixturewas concentrated and the crude obtained was purified by preparative HPLCpurification.

The Compounds described in Table 3 were synthesized analogous toCompound 97 by reacting Compound 97B with corresponding acids, sulfonylchlorides and aldehydes.

TABLE 3 Ret. Ex. Synthetic [M + Time HPLC No. Structure Name Method H]⁺(min.) Method  98

2-(3-Fluorophenyl)-N⁵-(1- pivaloylpiperidin-4-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide A 471 13.96 13.29A B  99

Methyl 4-(3-carbamoyl-2-(3- fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine- 5-carboxamido)piperidine-1-carboxylate B 445  6.88  6.39 A B 100

Isopropyl 4-(3-carbamoyl-2-(3- fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine- 5-carboxamido)piperidine-1-carboxylate B 473  8.01  7.40 A B 101

1,1,1-Trifluoro-2-methylpropan- 2-yl 4-(3-carbamoyl-2-(3-fluorophenyl)-4,5,6,7- tetrahydropyrazolo[1,5-a]pyrazine-5-carboxamido) piperidine-1-carboxylate D 541  9.026  8.726 A B102

N⁵-(1-(Cyclopropylsulfonyl) piperidin-4-yl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamideB 491  7.38  6.96 A B 103

2-(3-Fluorophenyl)-N⁵-(1- (3,3,3-trifluoropropyl)piperidin-4-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide C 483  9.28 10.56 C D

Intermediate 104A: Diethyl 2-((dimethylamino)methylene)-3-oxosuccinate

To a solution of diethyl oxalacetate sodium salt (100 g, 476 mmol) inethanol (250.00 mL) was added 1,1-dimethoxy-N,N-dimethylmethanamine (113g, 952 mmol) and the reaction was stirred at room temperature for 30min. Acetic acid (54.5 mL, 952 mmol) was added slowly over a period of 3h and stirred at room temperature for 24 h. The volatile components wereevaporated under reduced pressure and the oily residue was purified bysilica gel chromatography (750 g REDISEP® column, eluting with 30% EtOAcin hexane). Fractions containing the product were combined andevaporated to afford Intermediate 104A (43 g, 30.8%). MS(ES): m/z=244[M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 7.84 (s, 1H), 4.31 (q, J=7.2 Hz,2H), 4.18 (q, J=5.4 Hz, 2H), 3.35 (s, 3H), 3.04 (s, 3H), 1.36 (t, J=7.2Hz, 3H), 1.26 (t, J=7.2 Hz, 3H).

Intermediate 104B: Diethyl 1H-pyrazole-4,5-dicarboxylate

To a stirred solution of 104A (45 g, 185 mmol) in ethanol (150 mL) wasadded N₂H₄.HCl (12.67 g, 185 mmol) and the reaction mixture was stirredat RT overnight. The volatiles were evaporated under vacuum and thecrude residue was dissolved in water and was extracted with EtOAc (3×50mL). The combined organic layer was dried over Na₂SO₄, filtered andevaporated under vacuum. The resulting crude product obtained waspurified by ISCO using EtOAc and hexane to afford 104B (21.00 g, 97mmol, 52.4%). MS(ES): m/z=211 [M−H]⁺; ¹H NMR (300 MHz, CDCl₃) δ ppm 8.22(s, 1H) 4.48 (q, J=7.11 Hz, 2H) 4.36 (q, J=7.18 Hz, 2H) 1.33-1.49 (m,6H).

Intermediate 104C: Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of 104B (19 g, 90 mmol) in DMF (50 mL) was addedNIS (30.2 g, 134 mmol) and the reaction mixture was stirred for 16 h at115° C. LCMS indicated the completion of the reaction. DMF wasevaporated, the crude was dissolved in EtOAc, washed with water, sodiumthiosulfate solution, dried, filtered and evaporated under vacuum tofurnish crude product, which was purified by ISCO using EtOAc and hexanesystem. Fractions collected at 18-20% EtOAc in hexane were evaporated toget 104C (12.5 g, 37.0 mmol, 41.3% yield). MS(ES): m/z=338 [M+H]⁺; ¹HNMR (400 MHz, DMSO-d₆) δ ppm 14.25 (bs, 1H), 4.27 (m, 4H), 1.26 (m, 6H).

Intermediate 104D: Diethyl1-(2-((tert-butoxycarbonyl)amino)ethyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of Intermediate 104C (10.000 g, 29.6 mmol) in THF(100 mL) cooled at −5° C. was added triphenylphosphine (11.64 g, 44.4mmol) and DIAD (8.63 mL, 44.4 mmol) dropwise and stirred for 30 min. atthe same temperature. Solution of tert-butyl (2-hydroxyethyl) carbamate(7.15 g, 44.4 mmol) in THF (10 mL) was added at −5° C. and the stirringwas continued for additional 1.5 h. The volatiles were evaporated undervacuum and crude was purified by silica gel chromatography (120 gREDISEP® column, eluting with 18% EtOAc in hexane). Fractions containingthe product were combined and evaporated to afford the Intermediate 104D(8.2 g, 57%). MS(ES): m/z=482 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 4.79(bs, 1H), 4.28-4.48 (m, 6H), 3.58 (d, J=5.02 Hz, 2H), 1.43 (s, 9H),1.33-1.40 (m, 6H).

Intermediate 104E: Ethyl2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

The Intermediate 104D (7 g, 14.54 mmol) was dissolved in HCl in dioxane(2.210 mL, 4M solution, 72.7 mmol) and the reaction mixture was stirredat RT for 3 h. Volatiles were evaporated from the reaction mixture andthe residue was dissolved in cold water and basified by adding solidNaHCO₃ (pH=8-9). The aqueous layer was extracted with DCM (4×25 mL) andthe combined organic layer was dried, filtered and evaporated undervacuum at 60° C. for 2 h to give 104E (4.750 g, 14.17 mmol, 97%).MS(ES): m/z=336 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.43 (bs, 1H),4.31-4.37 (m, 2H), 4.24 (q, J=7.11 Hz, 2H), 3.56-3.62 (m, 2H), 1.27 (t,J=7.09 Hz, 3H).

Intermediate 104F: Ethyl2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 104E (5 g, 14.92 mmol) in THF (200mL) was added dropwise borane dimethyl sulfide complex (15 mL, 158 mmol)at RT. The resulting mixture was stirred at RT for 18 h. The reactionmixture was quenched with ethanol (100 mL) slowly and stirred at 70 OCfor 4 h. Volatiles were evaporated under vacuum and the crude waspurified by ISCO using methanol (2%) in chloroform as eluent to furnish104F (2.9 g, 60%). MS(ES): m/z=321 [M+H]⁺; ¹H NMR (400 MHz, CD₃OD) δ ppm4.25-4.34 (m, 2H), 4.22 (s, 2H), 4.12 (t, J=5.46 Hz, 2H), 3.20-3.28 (m,2H), 1.38 (td, J=7.12, 1.69 Hz, 3H).

Intermediate 104G: Ethyl5-(tert-butylcarbamoyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 104F (2.4 g, 7.47 mmol) in THF (20mL) was added 2-isocyanato-2-methylpropane (0.741 g, 7.47 mmol) and thereaction mixture was stirred for 1.5 h. The volatiles were evaporatedunder reduced pressure. The crude was purified by silica gelchromatography (120 g REDISEP® column, eluting with 28% EtOAc inhexane). Fractions containing the product were combined and evaporatedto afford Intermediate 104G (2.2 g, 70%). MS(ES): m/z=421 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 6.25 (s, 1H), 4.72 (s, 2H), 4.25 (q, J=6.8 Hz,2H), 4.10 (t, J=5.24 Hz, 2H), 3.75 (m, 2H), 1.30 (t, J=7.2 Hz, 3H) 1.28(s, 9H).

Intermediate 104H:5-(tert-Butylcarbamoyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a stirred solution of Intermediate 104G (2.1 g, 5.00 mmol) in EtOH(10 mL) and THF (5 mL) was added a solution of lithium hydroxide (0.718g, 30.0 mmol) in water (1 mL) and stirred at RT for 5 h. Solvent wasevaporated under reduced pressure and the crude was dissolved in waterand acidified with 1.5 N HCl at 0° C. The resultant precipitate wasfiltered and dried under vacuum to afford Intermediate 104H (1.8 g,81%). MS(ES): m/z=393 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 12.61 (s,1H), 6.27 (s, 1H), 4.69 (s, 2H), 4.09 (t, J=5.26 Hz, 2H), 3.74 (t,J=5.26, 2H), 1.28 (s, 9H).

Intermediate 4I:N⁵-(tert-Butyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 104H (1.800 g, 4.59 mmol) in DMF(20 mL) was added ammonium chloride (1.473 g, 27.5 mmol), HATU (3.49 g,9.18 mmol) and DIPEA (3.21 mL, 18.36 mmol) and the resulting reactionmixture was stirred for 3 h at RT. DMF was evaporated from the reactionmixture, water was added and extracted with EtOAc. The combined organiclayer was washed with cold water, dried over Na₂SO₄ and concentratedunder vacuum to give the crude product, which was purified by ISCO using70% ethyl acetate in hexane as eluent. The fractions containing thedesired product were combined and evaporated to afford Intermediate 1041(1.5 g, 85%). MS(ES): m/z=392 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm7.37 (bs, 1H), 6.86 (bs, 1H), 6.24 (s, 1H), 4.67 (s, 2H), 4.07 (t,J=5.31 Hz, 2H), 3.73 (t, J=5.31 Hz, 2H), 1.20 (s, 9H).

Compound 104:N⁵-(tert-Butyl)-2-(3-chlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of 1041 (200 mg, 0.511 mmol) and(3-chlorophenyl)boronic acid (160 mg, 1.022 mmol) in 1,4-dioxane (2 mL)and water (0.20 mL) was added potassium phosphate dibasic (267 mg, 1.534mmol). The reaction mixture was degassed for 5 min. with nitrogen,PdCl₂(dppf)-CH₂Cl₂ (29.2 mg, 0.036 mmol) was added and stirred at 80° C.for 5 h. Reaction progress was monitored by LCMS. The reaction mixturewas diluted with water (15 mL) and the aqueous layer was back extractedwith ethyl acetate (3×15 mL). The combined organic layer washed withbrine (2×25 mL), dried over Na₂SO₄, filtered and concentrated. The crudeproduct was purified by reverse phase preparative HPLC to affordCompound 104 (0.125 g, 65%). MS(ES): m/z=376 [M+H]⁺; HPLC Ret. Time 8.11min. and 8.47 min. (HPLC Methods A and B); ¹H NMR (400 MHz, DMSO-d₆) δppm 7.72 (dd, J=3.45, 0.69 Hz, 1H), 7.65 (dt, J=6.71, 1.88 Hz, 1H), 7.43(m, 2H), 7.28 (m, 2H), 6.28 (s, 1H), 4.69 (s, 2H), 4.13 (t, J=5.30 Hz,2H), 3.81 (t, J=5.33 Hz, 2H), 1.28 (s, 9H).

The Compounds described in Table 4 were synthesized analogous toCompound 104 by reacting Compound 1041 with corresponding boronic acids.

TABLE 4 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Method 105

N⁵-(tert-Butyl)-2-(3,5- difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 378  7.929  8.331A B 106

N⁵-(tert-Butyl)-2-(3,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 378  7.811  8.249A B 107

N⁵-(tert-Butyl)-2-(2- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 360 7.23 7.50 A B 108

N⁵-(tert-Butyl)-2-(3-chloro-4- fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 394  8.388  8.800A B 109

N⁵-(tert-Butyl)-2-(3- methoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 372 13.92  13.02 C D 110

N⁵-(tert-Butyl)-2-(3- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 410  8.778  8.210A B 111

N⁵-(tert-Butyl)-2-(pyridin-3-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 343  7.373  7.996 C D 112

N⁵-(tert-Butyl)-2-(2- fluoropyridin-4-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 361 10.988 D 113

N⁵-(tert-Butyl)-2-(5- fluoropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 361 10.918 10.306C D 114

N⁵-(tert-Butyl)-2-(3- cyanophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 367 13.465 12.598 C D 115

N⁵-(tert-Butyl)-2-(3-cyano-5- fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide  7.747  7.337 A B116

N⁵-(tert-Butyl)-2-phenyl-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 342  1.027 E 117

N⁵-(tert-Butyl)-2-(3,5- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 410 1.47 E 118

N⁵-(tert-Butyl)-2-(3- (methylsulfonamido)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 435  0.929 E119

N⁵-(tert-Butyl)-2-(quinolin-3-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 393  1.051 E 120

2-(3-Aminophenyl)-N⁵-(tert- butyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 357  0.856 E 121

N⁵-(tert-Butyl)-2-(thiophen-3- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 348  0.972 E 122

3-(5-(tert-Butylcarbamoyl)-3- carbamoyl-4,5,6,7-tetrahydropyrazolo[1,5-a] pyrazin-2-yl)benzoic acid 386  0.614 E 123

N⁵-(tert-Butyl)-2-(3- carbamoylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 385  0.776 E 124

N⁵-(tert-Butyl)-2-(2,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 378  1.091 E 125

N⁵-(tert-Butyl)-2-(2,6- difluoropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 379  0.986 E 126

N⁵-(tert-Butyl)-2-(pyridin-4-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 343  7.548  7.983 C D 127

N⁵-(tert-Butyl)-2-(4- cyanophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 376 13.058 12.571 C D 128

N⁵-(tert-Butyl)-2-(3,5- dimethylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 370  1.307 E 129

N⁵-(tert-Butyl)-2-(3,4- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 410  1.423 E 130

N⁵-(tert-Butyl)-2-(2,3- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 410  1.266 E 131

N⁵-(tert-Butyl)-2-(2- carbamoylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 385  0.733 E 132

N⁵-(tert-Butyl)-2-(quinolin-5-yl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 393  0.918 E 133

N⁵-(tert-Butyl)-2-(isoquinolin-4- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 393  0.979 E 134

N⁵-(tert-Butyl)-2-(isoquinolin-5- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 393  0.916 E 135

N⁵-(tert-Butyl)-2-(3- (methylsulfonamidomethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 449 0.922 E 136

N⁵-(tert-Butyl)-2-(3- sulfamoylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 421  0.822 E 137

N⁵-(tert-Butyl)-2-(3-fiuoro-5- methoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 390 1.18 E 138

N⁵-(tert-Butyl)-2-(3- (trifluoromethoxy)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 426  1.416 E 139

N⁵-(tert-Butyl)-2-(4-fluoro-3- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 428  1.424 E 140

N⁵-(tert-Butyl)-2-(2- chloroquinolin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 427  1.150 E 141

2-([1,1′-Biphenyl]-3-yl)-N⁵-(tert- butyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 418  9.383  8.932 A B 142

N⁵-(tert-Butyl)-2-(pyrimidin-5- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 344  9.416  8.804 C D 143

N⁵-(tert-Butyl)-2-(1H-indol-6- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 381  7.368  7.150 A B 144

N⁵-(tert-Butyl)-2-(4- (methylsulfonyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 420  6.356  6.183A B 145

N⁵-(tert-Butyl)-2-(1H-pyrazol-4- yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 332  9.380  8.760 C D 146

N⁵-(tert-Butyl)-2-(2-(pyrrolidin- 1-yl)pyrimidin-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 413 10.486 10.870C D 147

N⁵-(tert-Butyl)-2-(2- morpholinopyrimidin-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 429 11.715 11.137C D 148

N⁵-(tert-Butyl)-2-(5- chloropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 377 11.980 11.969C D 149

2-(Benzo[d]thiazol-5-yl)-N⁵- (tert-Butyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 399  6.621  6.505 A B 150

N⁵-(tert-Butyl)-2-(3-(methylthio) phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 388  8.062  7.836 A B 151

N⁵-(tert-Butyl)-2-(2,5- difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 376  7.431  7.184A B 152

N⁵-(tert-Butyl)-2-(3-chloro-5- methoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 406  8.476  8.041A B 153

N⁵-(tert-Butyl)-2-(1-methyl-1H- pyrazol-4-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 346  9.716  9.562C D 154

N⁵-(tert-Butyl)-2-(3-chloro-5- cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 401  8.297  7.933A B 155

N⁵-(tert-Butyl)-2-(3-fluoro-5- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide 428  9.239  8.335A B

Intermediate 156A: 5-tert-Butyl 3-ethyl2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a stirred solution of 104F (0.7 g, 2.180 mmol) in dichloromethane (10mL) was added triethylamine (0.912 mL, 6.54 mmol) and Boc₂O (0.952 g,4.36 mmol). The resulting reaction mixture was stirred at RT overnightand the reaction progress was monitored by LCMS. The reaction mixturewas diluted with dichloromethane (20 mL), washed with water, brine,dried over Na₂SO₄, filtered and concentrated. The crude product obtainedwas purified by ISCO (24 g silica gel column) using petroleum ether andethyl acetate (9:1) mixture as eluent. Fractions were collected andconcentrated to afford Intermediate 156A (800 mg, 87%). MS(ES): m/z=422[M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm 4.86 (s, 2H), 4.32 (q, J=6.8 Hz,2H), 4.20 (m, 2H), 3.87 (t, J=5.6 Hz, 2H), 1.50 (s, 9H), 1.38 (t, J=7.2Hz, 3H).

Intermediate 156B:5-(tert-Butoxycarbonyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a stirred solution of 156A (0.80 g, 1.899 mmol) in methanol (7 mL)was added sodium hydroxide (0.760 g, 1.899 mmol) in water (3 mL). Theresulting reaction mixture was stirred at RT for 6 h. Methanol wasremoved under reduced pressure and the aqueous layer was acidified with1.5 N HCl solution. The aqueous layer was back extracted withdichloromethane (3×25 mL). The combined organic layer was dried overNa₂SO₄, filtered and concentrated to give the desired Intermediate 156B(700 mg, 94%). MS(ES): m/z=394 [M+H]⁺; ¹H NMR (400 MHz, CDCl₃) δ ppm4.89 (s, 2H), 4.22 (t, J=5.2 Hz, 2H), 3.88 (t, J=5.6 Hz, 2H), 1.51 (s,9H).

Intermediate 156C: tert-Butyl3-carbamoyl-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of 156B (0.700 g, 1.780 mmol) and ammoniumchloride (0.190 g, 3.56 mmol) in DMF (7 mL) were added HATU (1.354 g,3.56 mmol) and DIPEA (0.933 mL, 5.34 mmol). The resulting reactionmixture was stirred at RT overnight. The reaction mixture was dilutedwith water (20 mL) and the aqueous layer was back extracted with ethylacetate (2×30 mL). The combined organic layer was washed with brine,dried over Na₂SO₄, filtered and concentrated. The crude product waspurified by ISCO (24 g silica gel column) using 2% methanol inchloroform as eluent to afford pure Intermediate 156C (670 mg, 96%).MS(ES): m/z=[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.38 (bs, 1H), 6.86(bs, 1H), 4.72 (s, 2H), 4.12 (t, J=5.2 Hz, 2H), 3.77 (t, J=5.7 Hz, 2H),1.43 (s, 9H).

Intermediate 156D: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 156C (500 mg, 1.275 mmol) and(3-chlorophenyl)boronic acid (399 mg, 2.55 mmol) in 1,4-dioxane (5 mL)and water (1 mL) was added and potassium phosphate tribasic (666 mg,3.82 mmol). The reaction mixture was purged with nitrogen for 5 min.PdCl₂(dppf)-CH₂Cl₂ (52.1 mg, 0.064 mmol) was added and the reactionmixture was stirred at 80° C. for 12 h. The reaction mixture was dilutedwith water (20 mL) and extracted with ethyl acetate (3×25 mL). Thecombined organic layer was washed with brine, dried over Na₂SO₄ andconcentrated. The crude was purified by ISCO (24 g silica column) using2% methanol in chloroform. Fractions were collected and concentrated toafford Intermediate 156D (380 mg, 79%). MS(ES): m/z=377 [M+H]⁺; ¹H NMR(300 MHz, CDCl₃) δ ppm 7.60 (s, 1H), 7.46 (m, 3H), 5.32 (bs, 2H), 4.97(s, 2H), 4.21 (t, J=5.1 Hz, 2H), 3.94 (t, J=5.7 Hz, 2H), 1.29 (s, 9H).

Intermediate 156E:2-(3-Chlorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of 156D (350 mg, 0.929 mmol) in DCM (10 mL) wasadded dropwise TFA (2 mL) at 0° C. and the reaction mixture was stirredat RT overnight. TFA and DCM were removed under reduced pressure, thecrude was basified with saturated sodium hydroxide solution, theresultant solid was filtered, washed with water, dried under vacuum toafford 156E (250 mg, 97%). MS(ES): m/z=277 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.71-7.73 (m, 1H), 7.65 (dt, J=7.04, 1.72 Hz, 1H),7.37-7.45 (m, 2H), 7.20 (bs, 1H), 7.10 (bs, 1H), 4.00-4.05 (m, 4H), 3.12(d, J=4.83 Hz, 2H), 2.63 (s, 1H).

Compound 156:2-(3-Chlorophenyl)-N⁵-(3,4-difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of 3,4-difluoroaniline (23.33 mg, 0.181 mmol) inDCM (2 mL) under nitrogen was added triethylamine (0.025 mL, 0.181 mmol)and the reaction mixture was cooled to 0° C. and triphosgene (26.8 mg,0.090 mmol) in DCM (1 mL) was added stirred at the same temperature for10 min. A solution of 156E (25 mg, 0.090 mmol) in DMF (1 mL) was addeddropwise and the resulting reaction mixture was stirred at RT overnight.It was diluted with water and the aqueous layer was back extracted withethyl acetate (3×10 mL). The combined organic layer was washed withbrine, dried over Na₂SO₄ and concentrated. The crude product obtainedwas purified by reverse phase preparative HPLC to afford pure product156 as an off-white solid (10 mg, 25%). MS(ES): m/z=432 [M+H]⁺; HPLCRet. Time 9.92 min. and 8.82 min. (HPLC Methods A and B); ¹H NMR (400MHz, CD₃OD) δ ppm 7.68-7.71 (m, 1H), 7.60 (ddd, J=5.32, 3.47, 1.63 Hz,1H), 7.48-7.53 (m, 1H), 7.44-7.48 (m, 2H), 7.16-7.20 (m, 2H), 5.01 (s,2H), 4.31 (t, J=5.40 Hz, 2H), 4.08 (t, J=5.40 Hz, 2H).

General Methods for the Syntheses of Ureas: Method A:

To a solution of Intermediate 156E (30 mg, 0.115 mmol) in DMF (1 mL) wasadded the corresponding isocyanate (0.288 mmol) at 0° C. The reactionmixture was stirred at room temperature for 3 h. The reaction mixturewas quenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with water (2×5 mL), brine solution,dried over Na₂SO₄, filtered and concentrated to afford the crude productwhich was purified by preparative HPLC.

Method B:

To a solution of primary amine (0.192 mmol) and triethylamine (0.480mmol) in tetrahydrofuran (3 mL) at 0° C. was added triphosgene (0.096mmol) and the reaction mixture stirred for 30 min at the sametemperature. Intermediate 156E (25 mg, 0.096 mmol) in DMF was added andthe solution was stirred at RT for 2 h. The reaction mixture wasquenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with 10% NaHCO₃ (2×5 mL), water, driedover Na₂SO₄ and concentrated to afford the crude product, which wasfurther purified by preparative HPLC.

Method C:

To a solution of primary amine (0.192 mmol) and triethylamine (0.480mmol) in tetrahydrofuran (3 mL) at 0° C. were added phenyl chloroformate(0.096 mmol) and the reaction mixture stirred for 60 min at RT. Thereaction mixture was quenched with water and the phenyl carbamate formedwas extracted and the Intermediate 156E (25 mg, 0.096 mmol) in THF wasadded to the extract and the resulting solution was stirred at roomtemperature for 2 h. The reaction mixture was quenched with water andextracted with ethyl acetate (3×5 mL). The combined organic layer waswashed with 10% NaHCO₃ (2×5 mL), water, dried over Na₂SO₄ andconcentrated to afford the crude product which was further purified bypreparative HPLC.

The Compounds described in Table 5 were synthesized analogous toCompound 156 by reacting Compound 156E with corresponding reagents.

TABLE 5 Ret Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method 157

2-(3-Chlorophenyl)-N⁵- (4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide B 414  8.789 8.522 A B 158

N⁵-(4-Chloro-3-(trifluoromethyl) phenyl)-2-(3-chlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide B 498 10.82110.044 A B 159

2-(3-Chlorophenyl)-N⁵- (4-cyano-3-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide B 48710.126  9.668 A B 160

2-(3-Chlorophenyl)-N⁵- (3-(trifluoromethoxy)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide B 480 10.292 9.665 A B 161

2-(3-Chlorophenyl)-N⁵- (3-cyanophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide B 421  8.541  8.323 A B 162

2-(3-Chlorophenyl)-N⁵- (4-(trifluoromethoxy)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide B 480 10.148 9.559 A B 163

2-(3-Chlorophenyl)-N⁵- (3-fluoro-4-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide B 48210.510  9.833 A B 164

2-(3-Chlorophenyl)-N⁵- (3,4-dichlorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide A 464 10.453  9.768 A B 165

2-(3-Chlorophenyl)-N⁵- (3-fluoro-5-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide A 48210.696  9.888 A B 166

2-(3-Chlorophenyl)-N⁵- (4-cyanophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide A 421  8.576  8.300 A B 167

2-(3-Chlorophenyl)-N⁵- (3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide B 414  8.971  8.618 A B 168

2-(3-Chlorophenyl)-N⁵- (4-(trifluoromethyl) phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine- 3,5(4H)-dicarboxamide B 464 10.253  9.605 A B 169

2-(3-Chlorophenyl)-N⁵- (3,5-difluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide B 432  9.478  9.190 A B 170

2-(3-Chlorophenyl)-N⁵- (3-methoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide B 426  8.657  8.368 A B 171

2-(3-Chlorophenyl)-N⁵- (6-chloropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide C 431  8.037 7.886 A B

Intermediate 172A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 156C (5 g, 12.7 mmol),(3-chloro-4-fluorophenyl)boronic acid (3.33 g, 19.12 mmol) in1,4-dioxane (75 mL) and water (7.5 mL) was added and K₃PO₄ (8.12 g, 38.2mmol) and the reaction mixture was purged with nitrogen for 5 min.PdCl₂(dppf)-CH₂Cl₂ (0.521 g, 0.637 mmol) was added and the reactionmixture was stirred at 80° C. for 12 h. The reaction mixture was dilutedwith water (75 mL) and extracted with EtOAc (3×75 mL). The combinedorganic layer was washed with brine, dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude reaction mixture was purified by silicagel chromatography (24 g REDISEP® column, eluting with 2% MeOH inCHCl₃). Fractions were collected and concentrated to afford Intermediate172A (4.2 g, 78%) as a white solid. MS(ES): m/z=395 [M+H]⁺; ¹H NMR (300MHz, DMSO-d₆) δ ppm 7.81-7.87 (m, 1H), 7.63-7.72 (m, 1H), 7.47 (s, 1H),7.15-7.37 (m, 2H), 4.74 (s, 2H), 4.16 (s, 2H), 3.80-3.88 (m, 2H), 1.45(s, 9H).

Intermediate 172B:2-(3-Chloro-4-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of Intermediate 172A (4.2 g, 10.64 mmol) in DCM(15 mL) was added TFA (12.29 mL, 160 mmol) dropwise at 0° C. and thereaction mixture was stirred at RT for 12 h. The reaction mixture wasconcentrated under reduced pressure and the crude was basified with asaturated aq. NaOH solution and stirred for 10 min. The solid productseparated was filtered, washed with water, and dried under vacuum toafford 172B as a white solid (2.8 g, 87%). MS(ES): m/z=295 [M+H]⁺; ¹HNMR (400 MHz, DMSO-d₆) δ ppm 7.86 (dd, J=7.53, 2.01 Hz, 1H), 7.69 (ddd,J=8.66, 4.89, 2.01 Hz, 1H), 7.44 (t, J=8.78 Hz, 1H), 7.11-7.20 (m, 2H),3.99-4.04 (m, 4H), 3.12 (d, J=6.02 Hz, 2H), 2.62 (s, 1H).

Compound 172:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4-dicarboxamide

To a solution of Intermediate 172B (0.20 g, 0.679 mmol) in THF (5 mL)was added 4-isocyanatobenzonitrile (0.117 g, 0.814 mmol) and thereaction mixture was stirred at RT for 14 h. The reaction mixture wasquenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with a 10% aqueous solution of NaHCO₃,brine, dried over Na₂SO₄, filtered and the filtrate concentrated. Thecrude product was purified by preparative HPLC to afford Compound 172 asan off-white solid (147 mg, 50%). HPLC retention times 8.99 min. and8.73 min. (Methods A and B respectively). MS(ES): m/z=439 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.45 (br. s., 1H), 7.85 (m, 1H), 7.65-7.76 (m,5H), 7.44-7.57 (m, 1H), 7.38 (br. s., 1H), 7.16 (br. s., 1H), 4.92 (s,2H), 4.26 (t, J=5.27 Hz, 2H), 4.01 (t, J=5.52 Hz, 2H).

The Compounds shown in Table 6 have been prepared similar to Compound172 by coupling of Intermediate 172B with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 6 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods 173

2-(3-Chloro-4- fluorophenyl)-N⁵-(3,5- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 484 10.296 11.179B A 174

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- (methylsulfonyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 492  7.828 7.880 B A 175

2-(3-Chloro-4- fluorophenyl)-N⁵-(3,4- dimethylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 442  9.712  8.891A B 176

N⁵-(3-Chloro-4- (trifluoromethyl)phenyl)- 2-(3-chloro-4-fluorophenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 518 11.240 10.294 A B 177

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- cyano-3-(1,1- dioxidothiomorpholino)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 573 1.243  1.256 J L 178

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- cyano-3-(piperazin-1-yl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 524 1.126  1.014 E L 179

2-(3-Chloro-4- fluorophenyI)-N⁵-(4- cyano-3- methoxyphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 467 9.02 8.76 A B180

N⁵-(4-Carbamoylphenyl)- 2-(3-chloro-4- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 457.2 6.95 7.07 AB 181

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- (trifluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 498.0 1.63 1.64 EL 182

2-(3-Chloro-4- fluorophenyl)-N⁵-(3,4- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 482.0 10.53  9.98  A B 183

2-(3-Chloro-4- fluorophenyl)-N⁵-(3,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 450 9.61 9.04 A B184

2-(3-Chloro-4- fluorophenyl)-N⁵-(3- (trifluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 498 10.39   9.83 A B 185

N⁵,2-Bis(3-chloro-4- fluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 466.0 9.83 9.56 A B 186

2-(3-Chloro-4- fluorophenyl)-N⁵-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 432 9.18 9.86 A B187

2-(3-Chloro-4- fluorophenyl)-N⁵-(3,4,5- trifluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 468 1.55 1.57 E L188

N⁵-(3,5- Bis(trifluoromethyl) phenyl)-2-(3-chloro-4- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 550 1.90 1.93 E L189

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- methoxy-3- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 512 1.56 1.58E L 190

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- fluoro-3-(trifluoromethyl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 5001.64 1.65 E L 191

2-(3-Chloro-4- fluorophenyl)-N⁵-(2,3- difluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 450 1.33 1.34 E L192

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- (trifluoromethyl)pyridin- 2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 483  9.543  9.052A B 193

2-(3-Chloro-4- fluorophenyl)-N⁵-(5- cyanopyridin-2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 440  8.188  8.113A B 194

2-(3-Chloro-4- fluorophenyl)-N⁵-(5- (trifluoromethyl)pyridin- 2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 483  9.567  9.094A B 195

2-(3-Chloro-4- fluorophenyl)-N⁵-(5- (methylsulfonyl)pyridin- 2-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 493  7.596  7.664A B 196

2-(3-Chloro-4- fluorophenyl)-N⁵- (isoquinolin-7-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 465  1.224  0.932E L 197

2-(3-Chloro-4- fluorophenyl)-N⁵- (quinoxalin-6-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 466  1.792  1.795K J 198

2-(3-Chloro-4- fluorophenyl)-N⁵-(3- fluoro-5-(trifluoromethyl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 4509.61 0.04 A B 199

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 433 8.82 8.72 A B200

2-(3-Chloro-4- fluorophenyl)-N⁵-(3- cyanophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 439 8.82 8.57 A B201

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- (difluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 474 8.89 8.88 A B202

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- cyano-3-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(H)- dicarboxamide 458 9.30 9.21A B 203

N⁵-(3-Chloro-4- cyanophenyl)-2-(3- chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 473 9.63 9.45A B 204

2-(3-Chloro-4- fluorophenyl)-N⁵-(4- cyano-3-(trifluoromethyl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 50710.258  9.696 A B

Intermediate 205A: tert-Butyl3-carbamoyl-2-(3,4-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 156C (9 g, 23 mmol),(3,4-dichlorophenyl) boronic acid (6.57 g, 34.4 mmol) in 1,4-dioxane(150 mL) and water (10 mL) was added K₃PO₄ (14.61 g, 68.8 mmol) and thereaction mixture was purged with nitrogen for 15 min. PdCl₂(dppf)-CH₂Cl₂(1.124 g, 1.377 mmol) was added and the reaction mixture was stirred at80° C. for 12 h. The reaction mixture was diluted with water (300 mL)and extracted with EtOAc (3×80 mL). The combined organic layer waswashed with brine, dried over Na₂SO₄, filtered and the filtrateconcentrated. The crude reaction mixture was purified by silica gelchromatography (40 g REDISEP® column, eluting with 65% EtOAc inhexanes). Fractions were collected and concentrated to affordIntermediate 205A as a pale yellow solid (8 g, 85%). MS(ES): m/z=411.0[M+1]⁺; ¹H NMR: (400 MHz, DMSO-d₆) δ ppm 7.92-7.87 (m, 1H), 7.69-7.64(m, 2H), 7.44-7.18 (m, 2H), 4.74 (s, 2H), 4.17 (t, 2H), 3.84 (t, 2H),1.45 (s, 9H).

Intermediate 205B:2-(3,4-Dichlorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of 205A (9 g, 21.88 mmol) in DCM (20 mL) was addeddropwise TFA (15 mL, 21.88 mmol) at 0° C. and the reaction mixture wasstirred at RT for 12 h. The volatiles were removed under reducedpressure and the crude product was basified with a 10% aq. NaOH solutionand stirred for 10 min. The solid product separated was filtered, washedwith water, and dried under vacuum to afford 205B as an off-white solid(5.2 g, 76%). MS(ES): m/z=311.0 [M+1]⁺; ¹H NMR: (400 MHz, DMSO-d₆) δ ppm7.92 (s, 1H), 7.67 (m, 2H), 7.32-7.09 (m, 2H), 4.02 (s, 4H), 3.12 (br.s., 2H), 2.70-2.58 (m, 1H).

Compound 205:N⁵-(4-Cyanophenyl)-2-(3,4-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 205B (0.20 g, 0.643 mmol) in THF (5 mL)was added 4-isocyanatobenzonitrile (0.111 g, 0.771 mmol) and thereaction mixture was stirred at RT for 14 h. The reaction mixture wasquenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with a 10% aqueous solution of NaHCO₃,brine, dried over Na₂SO₄, filtered and the filtrate concentrated. Thecrude product was purified by preparative HPLC to afford Compound 205 asan off-white solid (135 mg, 46%). HPLC retention times 9.44 min. and9.06 min. (Methods A and B respectively). MS(ES): m/z=405 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) d ppm 9.50 (br. s., 1H), 7.91 (s, 1H), 7.65-7.75 (m,6H), 7.25-7.45 (d, 2H), 4.92 (s, 2H), 4.26 (t, J=5.27 Hz, 2H), 4.01 (t,J=5.52 Hz, 2H).

The Compounds shown in Table 7 have been prepared similar to Compound205 by coupling of Intermediate 205B with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 7 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods 206

2-(3,4-Dichlorophenyl-N⁵- (3,5-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 498 10.698 11.357B A 207

2-(3,4-Dichlorophenyl)-N⁵-(4- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 498.2 10.91 10.14  A B 208

N⁵-(4-Cyano-3- (trifluoromethyl)phenyl)-2- (3,4-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 521 10.14  10.8 B A 209

N⁵,2-Bis(3,4-dichlorophenyl)- 6,7-dihydropyrazolo[1,5-a](pyrazine-3,5(4H)- dicarboxamidc 499.7 1.75 1.75 E L 210

2-(3,4-Dichlorophenyl)-N⁵- (isoquinolin-7-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 481  1.349  1.039E L 211

2-(3,4-Dichlorophenyl)-N⁵- (quinoxalin-6-yl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 482  1.935  1.943 J K 212

2-(3,4-Dichlorophenyl)-N⁵-(3- fluoro-5-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 51611.51  10.49  A B 213

2-(3,4-Dichlorophenyl)-N⁵-(4- (trifluoromethoxy)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 512 10.90 10.21  A B 214

N⁵-(4-Cyano-3- methylphenyl)-2-(3,4- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 470 9.78 9.31 A B

Intermediate 215A:2-(3-Chloro-5-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

To a solution of 1-bromo-3-chloro-5-fluorobenzene (1.5 g, 7.16 mmol) andbis(pinacolato)diboron (2.182 g, 8.59 mmol) in dioxane (5 mL) was addedKOAc (2.109 g, 21.49 mmol) and the reaction mixture was degassed with N₂gas for 15 min. Pd₂(PPh₃)₂Cl₂ (0.302 g, 0.430 mmol) was added and thereaction mixture was heated at 100° C. and stirred for 12 h. Thereaction mixture was filtered through CELITE® pad and concentrated. Thecrude product was purified by silica gel chromatography (12 g REDISEP®column, eluting with 1% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford the Intermediate 215A ascolorless liquid (1.3 g, 71%). ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.59 (td,J=2.3, 9.0 Hz, 1H), 7.46 (dd, J=1.0, 2.0 Hz, 1H), 7.34 (ddd, J=1.0, 2.5,8.5 Hz, 1H), 1.31 (s, 12H).

Intermediate 215B: tert-Butyl3-carbamoyl-2-(3-chloro-5-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 156C (1 g, 2.55 mmol),Intermediate 215A (981 mg, 3.82 mmol) in 1,4-dioxane (20 mL) was addedK₃PO₄ (1624 mg, 7.65 mmol) in water (1.0 mL) and the reaction mixturewas purged with nitrogen for 5 min. PdCl₂(dppf)-CH₂Cl₂ (125 mg, 0.153mmol) was added and the reaction mixture was stirred at 80° C. for 12 h.The reaction mixture was diluted with water (25 mL) and extracted withEtOAc (3×25 mL). The combined organic layer was washed with brine, driedover Na₂SO₄, filtered and the filtrate concentrated. The crude reactionmixture was purified by silica gel chromatography (24 g REDISEP® column,eluting with 70% EtOAc in hexanes). Fractions were collected andconcentrated to afford Intermediate 215B as an off-white solid (850 mg,84%). MS(ES): m/z=575 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.60 (t,J=1.5 Hz, 1H), 7.54-7.47 (m, 1H), 7.47-7.32 (m, 3H), 4.74 (s, 2H), 4.18(t, J=5.5 Hz, 2H), 3.84 (t, J=5.3 Hz, 2H), 1.45 (s, 9H).

Intermediate 215C:2-(3-Chloro-5-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 215B (850 mg, 2.153 mmol) in DCM (7 mL)was added TFA (5 mL) at 0° C. and the resulting solution was allowed towarm to RT and stirred for 2 h. The volatiles were removed under areduced pressure and the residue was triturated with Et₂O. The solidproduct separated was treated with a 10% aqueous solution of NaOH at RTand stirred vigorously for 2 h. The solid product separated wasfiltered, washed with water and azeotroped with toluene to affordIntermediate 215C as an off-white solid (500 mg, 79%). MS(ES): m/z=295.2[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.63 (t, J=1.5 Hz, 1H),7.56-7.50 (m, 1H), 7.40 (td, J=2.1, 8.8 Hz, 1H), 7.27 (br. s., 2H),4.07-3.99 (m, 4H), 3.13 (q, J=5.5 Hz, 2H), 2.68-2.60 (m, 1H).

Compound 215:2-(3-Chloro-5-fluorophenyl)-N⁵-(4-cyano-3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 215C (30 mg, 0.102 mmol) in DMSO (1 mL)was added phenyl (4-cyano-3-fluorophenyl)carbamate (39.1 mg, 0.153 mmol)and the resulting solution was stirred at RT for 12 h. The reactionmixture was diluted with water and the solid product filtered and dried.The crude product was purified by preparative HPLC to afford Compound215 as an off-white solid. HPLC retention times 9.31 min. and 9.25 min.(Methods A and B respectively). MS(ES): m/z=457 [M+H]⁺; ¹H NMR: (400MHz, DMSO-d₆) δ ppm 9.62 (s, 1H), 7.75-7.84 (m, 1H), 7.70 (dd, J=12.80,1.76 Hz, 1H), 7.62 (t, J=1.51 Hz, 1H), 7.31-7.56 (m, 5H), 4.92 (s, 2H),4.27 (t, J=5.27 Hz, 2H), 4.01 (t, J=5.27 Hz, 2H).

The Compounds shown in Table 8 have been prepared similar to Compound215 by reaction of Intermediate 215C with respective anilinesphenylcarbamates or with readily available isocyanates.

TABLE 8 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods 216

2-(3-Chloro-5- fluorophenyl)-N⁵-(3,5- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 484 10.347 11.365B A 217

2-(3-Chloro-5- fluorophenyl)-N⁵-(3,4- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 484.0 10.78 10.15  A B 218

2-(3-Chloro-5- fluorophenyl)-N⁵-(4- cyano-3-(trifluoromethyl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide507.2 9.65 10.64  B A 219

2-(3-Chloro-5- fluorophenyl)-N⁵-(4- (trifluoromethyl)phenyl)6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 482.2 14.98 17.52  B A 220

2-(3-Chloro-5- fluorophenyl)-N⁵-(3- fluoro-5-(trifluoromethyl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 49811.13  10.22  A B 221

2-(3-Chloro-5- fluorophenyl)-N⁵-(4- cyano-3-methylphenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 453 9.10 9.07A B 222

N⁵-(3-Chloro-4- cyanophenyl)-2-(3-chloro- 5-fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 475 9.67 9.55 A B

Intermediate 223A: tert-Butyl3-carbamoyl-2-(3-fluoro-5-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (500 mg, 1.275 mmol) and(3-fluoro-5-methylphenyl)boronic acid (294 mg, 1.912 mmol) in1,4-dioxane (10 mL) was added K₃PO₄ (812 mg, 3.82 mmol) in water (1 mL)and reaction mixture was degassed with N₂ for 15 min. PdCl₂(dppf)CH₂Cl₂(62.5 mg, 0.076 mmol) was added and the reaction mixture was heated at85° C. and stirred for 12 h. The reaction mixture was concentrated undera reduced pressure and the crude product was purified by silica gelchromatography (24 g REDISEP® column, eluting with 65% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford the Intermediate 223A as a pale yellow solid (0.4 g, 84%).MS(ES): m/z=375.2 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.34 (d, J=0.8Hz, 2H), 7.28-7.21 (m, 1H), 7.15-7.07 (m, 1H), 7.07-7.00 (m, 1H), 4.73(s, 2H), 4.15 (t, J=5.3 Hz, 2H), 3.88-3.80 (m, 2H), 2.35 (s, 3H), 1.45(s, 9H).

Intermediate 223B:2-(3-Fluoro-5-methylphenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 223A (400 mg, 1.068 mmol) in DCM (4 mL)was added TFA (2.5 mL) at 0° C. and the resulting solution was allowedto warm to RT and stirred for 2 h. The volatiles were removed under areduced pressure and the crude product was triturated with Et₂O (2×20mL). The TFA salt was suspended in a 10% aqueous solution of NaOH andstirred vigorously at RT for 2 h. The solid product separated wasfiltered, washed with water, azeotroped with toluene to affordIntermediate 223B as an off-white solid (0.210 g, 71%). MS(ES):m/z=275.1 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 9.38 (br. s., 1H),7.42 (br. s., 1H), 7.33 (s, 1H), 7.24 (d, J=9.4 Hz, 1H), 7.08 (d, J=9.4Hz, 2H), 4.55 (s, 2H), 4.36 (t, J=5.7 Hz, 2H), 3.69 (t, J=5.7 Hz, 2H),2.36 (s, 3H).

Compound 223:2-(3-Fluoro-5-methylphenyl)-N-(4-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of 4-(trifluoromethyl)aniline (29.0 mg, 0.180 mmol) andTEA (0.063 mL, 0.449 mmol) in THF (3 mL) was added triphosgene (26.7 mg,0.090 mmol) at 0° C. and the resulting solution was stirred at the sametemperature for 30 min. A solution of Intermediate 223B (25 mg, 0.090mmol) in THF (2 mL) was added and the reaction mixture was stirred at RTfor 3 h. The reaction mixture was quenched with water and extracted withethyl acetate (3×5 mL). The combined organic layer was washed with a 10%aqueous solution of NaHCO₃, brine, dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude product was purified by preparativeHPLC to afford Compound 223 as a white solid (22 mg, 51%). HPLCretention times 1.65 min. (Method E). MS(ES): m/z=462 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.30 (s, 1H), 7.67-7.74 (m, 2H), 7.59-7.66 (m,2H), 7.36 (s, 2H), 7.28 (d, J=10.04 Hz, 1H), 7.13 (br. s., 1H), 7.04 (d,J=9.54 Hz, 1H), 4.91 (s, 2H), 4.24 (t, J=5.27 Hz, 2H), 4.01 (t, J=5.27Hz, 2H), 2.30-2.35 (s, 3H).

The Compounds shown in Table 9 have been prepared similar to Compound223 by reaction of Intermediate 223B with respective anilinesphenylcarbamates or with readily available/in-situ generatedisocyanates.

TABLE 9 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods 224

N⁵-(4-Cyano-3- fluorophenyl)-2-(3-fluoro-5- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 437.0 1.44 E 225

N⁵-(Benzo[d]thiazol-6-yl)- 2-(3-fluoro-5- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.0 1.23 E 226

N⁵-(2,2-Dioxido-1,3- dihydrobenzo[c]thiophen-5- yl)-2-(3-fluoro-5-methylphenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 484.0 1.14 E 227

N⁵-(2,2-Difluorobenzo[d] [1,3]dioxol-5-yl)-2-(3-fluoro-5-methylphenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 474.0 1.62 E 228

2-(3-Fluoro-5- methylphenyl)-N⁵-(2- methylbenzo[d]thiazol-5-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 465.01.31 E 229

N⁵-(4-Cyano-3- (trifluoromethyl)phenyl)-2- (3-fluoro-5-methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 487.0 1.61 E230

N⁵-(3-Chloro-4- cyanophenyl)-2-(3-fluoro-5- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 452.9 1.51 E

Intermediate 231A: tert-Butyl3-carbamoyl-2-(3,4-difluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (1.0 g, 2.55 mmol) and(3,4-difluorophenyl) boronic acid (0.604 g, 3.82 mmol) in 1,4-dioxane(10 mL) was added K₃PO₄ (1.624 g, 7.65 mmol) in water (2 mL) and thereaction mixture was purged with nitrogen for 5 min. PdCl₂(dppf)-CH₂Cl₂(0.125 g, 0.153 mmol) was added, the reaction mixture was heated to 80°C. and stirred for 5 h. The reaction mixture was quenched with water andextracted with ethyl acetate (3×25 mL). The combined organic layer waswashed with water, brine, dried over Na₂SO₄, filtered and the filtrateconcentrated. The crude was purified by silica gel chromatography (40 gREDISEP® column, eluting with 5% MeOH in CHCl₃). Fractions containingthe product were combined and evaporated to afford the Intermediate 231Aas a white solid (0.6 g, 62%). MS(ES): m/z=379 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.69 (ddd, J=12.30, 8.03, 1.76 Hz, 1H), 7.42-7.58 (m,2H), 7.30 (br. s., 1H), 7.16 (br. s., 1H), 4.74 (s, 2H), 4.11-4.22 (m,2H), 3.85 (d, J=5.52 Hz, 2H), 1.46 (s, 9).

Intermediate 231B:2-(3,4-Difluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To the solution of Intermediate 231A (0.5 g, 1.321 mmol) in DCM (10 mL)at 0° C. was added TFA (0.509 mL, 6.61 mmol) and the resulting solutionwas stirred at RT for 3 h. The volatiles were removed under reducedpressure and the residue was suspended in a 10% aqueous solution of NaOH(10 mL) and stirred for 30 min. The solid filtered through a Buchnerfunnel, rinsed with diethyl ether and dried to afford Intermediate 231B(0.32 g, 87%). MS(ES): m/z=279 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm7.71 (ddd, J=12.28, 7.93, 2.08 Hz, 1H), 7.39-7.60 (m, 1H), 6.99-7.31 (m,1H), 3.94-4.07 (m, 2H), 3.26-3.53 (m, 4H), 3.11 (q, J=5.67 Hz, 1H).

Compound 231:2-(3,4-Difluorophenyl)-N⁵-(4-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of 4-(trifluoromethyl)aniline (29.0 mg, 0.180 mmol) andTEA (0.063 mL, 0.449 mmol) in THF (3 mL) was added triphosgene (26.7 mg,0.090 mmol) at 0° C. and the resulting solution was stirred at the sametemperature for 30 min. A solution of Intermediate 231B (25 mg, 0.090mmol) in THF (2 mL) was added and the reaction mixture was stirred at RTfor 3 h. The reaction mixture was quenched with water and extracted withethyl acetate (3×5 mL). The combined organic layer was washed with a 10%aqueous solution of NaHCO₃, brine, dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude product was purified by preparativeHPLC to afford Compound 231 as a white solid (21 mg, 50%). HPLCretention time is 1.58 min. (Method E). MS(ES): m/z=466 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.31 (s, 1H), 7.66-7.78 (m, 3H), 7.62 (s, 2H),7.44-7.59 (m, 2H), 7.37 (br. s., 1H), 7.20 (br. s., 1H), 4.92 (s, 2H),4.25 (d, J=10.54 Hz, 2H), 4.01 (d, J=10.54 Hz, 2H).

The Compounds shown in Table 10 have been prepared similar to Compound231 by coupling of Intermediate 231B with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 10 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods232

N⁵-(2,2-Difluorobenzo [d][1,3]dioxol-5-yl)-2- (3,4-difluorophenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)- dicarboxamide 478.0 1.56 E233

N⁵-(3-Chloro-4- cyanophenyl)-2-(3,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 455.0 1.43 E 234

2-(3,4-Difluorophenyl)-N⁵- (2,2-dioxido-1,3- dihydrobenzo[c]thiophen-5-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 488.01.07 E 235

N⁵-(Benzo[d]thiazol-6-yl)- 2-(3,4-difluorophenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 455.0 1.14 E 236

N⁵-(4-Cyano-3- fluorophenyl)-2-(3,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 439.0 1.36 E 237

N⁵-(4-Cyano-3- (trifluoromethyl)phenyl)- 2-(3,4-difluorophenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 491.0 1.54 E238

2-(3,4-Difluorophenyl)-N⁵- (2-methylbenzo[d]thiazol-5-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 469.01.25 E

Intermediate 239A: tert-Butyl3-Carbamoyl-2-(4-fluoro-3-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (500 mg, 1.275 mmol) and(4-fluoro-3-methylphenyl)boronic acid (294 mg, 1.912 mmol) in1,4-dioxane (10 mL) was added K₃PO₄ (812 mg, 3.82 mmol) in water (0.4mL) and the reaction mixture was degassed with N₂ for 15 min.PdCl₂(dppf)CH₂Cl₂ (62.5 mg, 0.076 mmol) was added and the reactionmixture was heated to 85° C. and stirred for 14 h. The reaction mixturewas concentrated under reduced pressure and the crude product waspurified by silica gel chromatography (24 g REDISEP® column, elutingwith 65% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate 239A as a pale yellowsolid (0.44 g, 92%). ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.54 (d, J=7.2 Hz,1H), 7.47 (ddd, J=2.3, 5.4, 8.2 Hz, 1H), 7.24 (hr. s., 1H), 7.22-7.13(m, 1H), 6.88 (br. s., 1H), 4.73 (s, 2H), 4.14 (t, J=5.5 Hz, 2H), 3.84(t, J=5.3 Hz, 2H), 2.26 (d, J=1.5 Hz, 3H), 1.45 (s, 9H).

Intermediate 239B:2-(4-Fluoro-3-methylphenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 239A (440 mg, 1.175 mmol) in DCM (5 mL)was added TFA (4 mL) at 0° C. and the resulting solution was allowed towarm to RT and stirred for 2 h. The volatiles were removed underpressure and the residue was triturated with Et₂O (2×20 mL). The solidcompound was suspended in a 10% aqueous solution of NaOH and stirredvigorously at RT for 2 h. The solid was filtered, washed with water andazeotroped with toluene to afford Intermediate 239B as a brown colorsolid (0.250 g, 77%). MS(ES): m/z=275.2 [M+H]⁺. ¹H NMR (300 MHz,DMSO-d₆) δ ppm 7.56 (d, J=7.9 Hz, 1H), 7.49 (ddd, J=2.3, 5.3, 8.3 Hz,1H), 7.21-7.08 (m, 2H), 6.85 (br. s., 1H), 4.06-3.95 (m, 4H), 3.11 (d,J=4.9 Hz, 2H), 2.62 (br. s., 1H), 2.25 (d, J=1.5 Hz, 3H).

Compound 239:N⁵-(4-Cyano-3-methylphenyl)-2-(4-fluoro-3-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 239B (30 mg, 0.109 mmol) in DMSO(1 mL) was added phenyl (4-cyano-3-methylphenyl)carbamate (41.4 mg,0.164 mmol) and the resulting solution was stirred at RT for 12 h. Thereaction mixture was diluted with water and solid product was separatedisolated and purified by reverse phase preparative HPLC to affordCompound 239 as a white solid (23 mg, 48%). HPLC retention times are8.47 min. and 8.96 min. (Methods A and B respectively). MS(ES): m/z=433[M+H]⁺; ¹H NMR: (400 MHz, DMSO-d₆) δ ppm 9.32 (s, 1H), 7.65 (d, J=8.53Hz, 1H), 7.57 (s, 2H), 7.45-7.53 (m, 2H), 7.30 (br. s., 1H), 7.14-7.23(m, 1H), 6.91 (br. s., 1H), 4.90 (s, 2H), 4.22 (t, J=5.27 Hz, 2H), 4.00(t, J=5.27 Hz, 2H), 2.40-2.47 (m, 3H), 2.27 (d, J=1.51 Hz, 3H).

The Compounds shown in Table 11 have been prepared similar to Compound239 by reaction of Intermediate 239B with respective anilinesphenylcarbamates or with readily available/in-situ generatedisocyanates.

TABLE 11 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods240

2-(4-Fluoro-3- methylphenyl)-N⁵-(2- methylbenzo[d]thiazol-5-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 465.01.30 E 241

N⁵-(Benzo[d]thiazol-6- yl)-2-(4-fluoro-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.0 1.20 E 242

2-(4-Fluoro-3- methylphenyl)-N⁵-(4- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 462.0 1.64 E243

N⁵-(4-Cyano-3- fluorophenyl)-2-(4- fluoro-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 437.0 1.42 E 244

N⁵-(3-Chloro-4- cyanophenyl)-2-(4-fluoro- 3-methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 453 1.49 E 245

N⁵-(4-Cyano-3- (trifluoromethyl)phenyl)- 2-(4-fluoro-3-methylphenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 487.0 1.61 E 246

N⁵-(2,2-Dioxido-1,3- dihydrobenzo[c]thiophen- 5-yl)-2-(4-fluoro-3-methylphenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 484.0 1.13 E 247

N⁵-(2,2-Difluorobenzo [d][1,3]dioxol-5-yl)-2- (4-fluoro-3-methylphenyl)-6,7- dihydropyrazolo[1,5- a]pyrazine-3,5(4H)-dicarboxamide 474.0 1.60 E 248

N⁵-(4-Cyanophenyl)-2- (4-fluoro-3- methylphenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 419.0 1.27 E

Intermediate 249A: tert-Butyl3-carbamoyl-2-(3-chloro-4-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (1 g, 2.55 mmol) in 1,4-dioxane (15mL) and water (1.5 mL) was added (3-chloro-4-methylphenyl)boronic acid(0.652 g, 3.82 mmol), K₃PO₄ (1.624 g, 7.65 mmol) and the reactionmixture was purged with N₂ for 5 min. PdCl₂(dppf)-CH₂Cl₂ adduct (0.125g, 0.153 mmol) was added and the reaction mixture was heated to 80° C.and stirred for 5 h. The reaction mixture was cooled to RT, filteredthrough CELITE® pad and the filtrate was concentrated under vacuum. Thecrude product was diluted with water and extracted with ethyl acetate(3×25 mL). The combined organic layer was washed with brine, dried overNa₂SO₄ and concentrated. The crude product was purified by silica gelchromatography (40 g REDISEP® column, eluting with 5% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordthe Compound 249A as a pale brown solid (0.68 g, 70%). MS(ES): m/z=391[M+1]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.69 (d, J=1.5 Hz, 1H),7.56-7.51 (m, 1H), 7.40 (s, 1H), 7.34-7.26 (m, 1H), 7.16-7.06 (m, 1H),4.73 (s, 2H), 4.15 (s, 2H), 3.84 (s, 2H), 2.35 (s, 3H), 1.45 (s, 9H).

Intermediate 249B:2-(3-Chloro-4-methylphenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 249A (680 mg, 1.740 mmol) in DCM (5 mL)was added TFA (2.011 mL, 26.1 mmol) dropwise at 0° C. and the resultingsolution was warmed to RT and stirred for 4 h. The reaction mixture wasconcentrated and the crude product was suspended in a 20% aqueoussolution of NaOH at 0° C. and stirred at RT for 2 h. The solid separatedwas filtered and dried to afford Intermediate 249B as a grey solid (450mg, 87%). MS(ES): m/z=291 [M+1]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.71(d, J=1.5 Hz, 1H), 7.55 (dd, J=7.8, 1.8 Hz, 1H), 7.36 (d, J=8.0 Hz, 1H),7.25-6.97 (m, 2H), 4.06-3.91 (m, 4H), 3.12 (br. s., 2H), 2.69-2.58 (m,1H), 2.35 (s, 3H).

Compound 249:2-(3-Chloro-4-methylphenyl)-N⁵-(4-cyano-3-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 249B (30 mg, 0.103 mmol) in DMSO(3 mL) was added phenyl (4-cyano-3-methylphenyl)carbamate (31.2 mg,0.124 mmol) and the resulting solution was stirred at RT for 8 h. Thereaction mixture was diluted with water, stirred vigorously for 5 minand the crude product separated was filtered and dried under vacuum. Thecrude product was purified by preparative HPLC to afford Compound 249 asan off-white solid (25.97 mg, 56%). HPLC retention times 8.79 min. and9.72 min. (Methods B and A respectively). MS(ES): m/z=449 [M+1]⁺; ¹HNMR: (400 MHz, DMSO-d₆) δ ppm 9.32 (s, 1H), 7.71 (d, J=1.51 Hz, 1H),7.65 (d, J=8.53 Hz, 1H), 7.45-7.59 (m, 3H), 7.30-7.44 (m, 2H), 7.14 (br.s., 1H), 4.90 (s, 2H), 4.24 (t, J=5.27 Hz, 2H), 4.00 (t, J=5.27 Hz, 2H),2.43 (s, 3H), 2.31-2.39 (m, 3H).

The Compounds shown in Table 12 have been prepared similar to Compound249 by reaction of Intermediate 249B with respective anilinesphenylcarbamates or with readily available/in-situ generatedisocyanates.

TABLE 12 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods250

2-(3-Chloro-4- methylphenyl)-N⁵-(2,2- difluorobenzo[d][1,3]dioxol-5-yl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide490.0 1.73 E 251

2-(3-Chloro-4- methylphenyl)-N⁵-(2,2- dioxido-1,3- dihydrobenzo[c]thiophen-5-yl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 500.0 1.26 E 252

2-(3-Chloro-4- methylphenyl)-N⁵-(2- methylbenzo[d]thiazol-5-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 481.01.42 E 253

2-(3-Chloro-4- methylphenyl)-N⁵-(4- cyano-3-(trifluoro- methyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide 503.0 1.73 E254

N⁵-(Benzo[d]thiazol- 6-yl)-2-(3-chloro-4- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 467.0 1.34 E 255

2-(3-Chloro-4- methylphenyl)-N⁵-(4- cyano-3-fluorophenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 453.0 1.56 E256

N⁵-(3-Chloro-4- cyanophenyl)-2-(3- chloro-4- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 468.8 1.62 E 257

2-(3-Chloro-4- methylphenyl)-N⁵-(4- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 478.0 1.76 E

Intermediate 258A: 3-Chloro-4-cyclopropylaniline

To a solution 4-bromo-3-chloroaniline (3 g, 14.53 mmol) andcyclopropylboronic acid (1.872 g, 21.80 mmol) in 1,4-dioxane (30 mL) wasadded Na₂CO₃ (4.62 g, 43.6 mmol) in water (0.4 mL) and the reactionmixture was degassed with N₂ for 15 min. PdCl₂(dppf)CH₂Cl₂ (1.187 g,1.453 mmol) was added and the reaction mixture was heated to 85° C. andstirred for 16 h. The reaction mixture was concentrated under a reducedpressure and the crude product was purified by silica gel chromatography(40 g REDISEP® column, eluting with 70% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to afford theIntermediate 258A as a colorless semi-solid (1.2 g, 49%). ¹H NMR (400MHz, DMSO-d₆) δ ppm 6.70 (d, J=8.5 Hz, 1H), 6.62-6.60 (m, 1H), 6.43 (dd,J=2.3, 8.3 Hz, 1H), 5.15 (s, 2H), 1.90 (tt, J=5.1, 8.4 Hz, 1H),0.87-0.81 (m, 2H), 0.53-0.48 (m, 2H).

Intermediate 258B: 2-Chloro-1-cyclopropyl-4-iodobenzene

To a solution of 258A (1 g, 5.97 mmol) in 6N HCl (5 mL) was added NaNO₂(0.453 g, 6.56 mmol) in water (1 mL) at 0° C. and the reaction mixturewas stirred at the same temperature for 45 min. KI (1.981 g, 11.93 mmol)was added and the reaction mixture and stirred at 0° C. for anadditional 15 min. The reaction mixture was warmed to RT and extractedwith Et₂O (3×10 mL). The combined organic layer was washed with anaqueous saturated solution of NaHSO₃, dried over Na₂SO₄, filtered andthe filtrate concentrated to afford Intermediate 258B as a brown colorsemi-solid (1.3 g, 78%). ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.77 (d, J=2.0Hz, 1H), 7.58 (dd, J=1.5, 8.0 Hz, 1H), 6.84-6.79 (m, 1H), 2.09 (tt,J=5.4, 8.4 Hz, 1H), 1.04-0.98 (m, 2H), 0.72-0.66 (m, 2H).

Intermediate 258C:2-(3-Chloro-4-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

To a solution of Intermediate 258B (1.3 g, 4.67 mmol) andbis(pinacolato) diboron (1.422 g, 5.60 mmol) in dioxane (20 mL) wasadded KOAc (1.374 g, 14.00 mmol) and the reaction mixture was degassedwith N₂ gas for 15 min. PdCl₂(PPh₃)₂ (0.197 g, 0.280 mmol) was added andreaction mixture was heated to 100° C. and stirred for 12 h. Thereaction mixture was concentrated under a reduced pressure and the crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with 8% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford the Intermediate 258C as a colorlesssemi-solid (1.2 g, 92%). ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.60-7.58 (m,1H), 7.53-7.48 (m, 1H), 7.02 (d, J=7.5 Hz, 1H), 2.19 (tt, J=5.1, 8.4 Hz,1H), 1.17 (s, 12H), 1.08-1.02 (m, 2H), 0.76-0.70 (m, 2H).

Intermediate 258D: tert-Butyl3-carbamoyl-2-(3-chloro-4-cyclopropylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (500 mg, 1.275 mmol) and 258C (533mg, 1.912 mmol) in 1,4-dioxane (3 mL) was added K₃PO₄ (812 mg, 3.82mmol) in water (0.4 mL) and the reaction mixture was degassed with N₂for 15 min. PdCl₂(dppf)CH₂Cl₂ adduct (62.5 mg, 0.076 mmol) was added andthe reaction mixture was heated to 85° C. and stirred for 12 h. Thereaction mixture was concentrated under a reduced pressure and the crudeproduct was purified by silica gel chromatography (24 g REDISEP® column,eluting with 60% EtOAc in hexanes). Fractions containing the productwere combined and evaporated to afford the Intermediate 258D as anoff-white solid (350 mg, 66%). MS(ES): m/z=417.2 [M+H]⁺; ¹H NMR (400MHz, DMSO-d₆) δ ppm 7.69 (d, J=2.0 Hz, 1H), 7.53 (dd, J=2.0, 8.0 Hz,1H), 7.35-7.09 (m, 2H), 7.06 (d, J=8.0 Hz, 1H), 4.73 (s, 2H), 4.15 (t,J=5.5 Hz, 2H), 3.87-3.81 (m, 2H), 2.21-2.12 (m, 1H), 1.45 (s, 9H),1.06-1.00 (m, 2H), 0.77-0.71 (m, 2H).

Intermediate 258E:2-(3-Chloro-4-cyclopropylphenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA salt

To solution of Intermediate 258D (350 mg, 0.840 mmol) in DCM (7 mL) wasadded TFA (5 mL) at 0° C. and the resulting solution was allowed to warmto RT and stirred for 2 h. The volatiles were removed under a reducedpressure and the residue was triturated with Et₂O to afford TFA salt ofIntermediate 258E as an off-white solid (300 mg, 83%). MS(ES): m/z=317.2[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 9.43 (br. s., 1H), 7.68 (d,J=1.9 Hz, 1H), 7.52 (dd, J=1.7, 8.1 Hz, 1H), 7.40 (br. s., 1H), 7.15(br. s., 1H), 7.08 (d, J=8.3 Hz, 1H), 4.55 (s, 2H), 4.40-4.32 (m, 2H),3.69 (t, J=5.9 Hz, 2H), 2.22-2.12 (m, 1H), 1.08-1.00 (m, 2H), 0.78-0.70(m, 2H).

Compound 258:2-(3-Chloro-4-cyclopropylphenyl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 258E (80 mg, 0.186 mmol) in THF (5 mL) wasadded TEA (0.259 mL, 1.857 mmol) and the resulting solution was stirredat RT for 30 min. 4-Isocyanatobenzonitrile (26.8 mg, 0.186 mmol) wasadded and the reaction mixture was stirred at RT for 14 h. The reactionmixture was diluted with EtOAc, washed with water, brine, dried overNa₂SO₄, filtered and the filtrate concentrated. The crude product waspurified by preparative HPLC to afford Compound 258 as an off-whitesolid (0.02 g, 22%). HPLC retention times 1.571 min. and 1.556 min.(Methods J and K respectively). MS(ES): m/z=461.2 [M+H]⁺; ¹H NMR (400MHz, DMSO-d₆) δ ppm 9.39 (s, 1H), 7.62-7.80 (m, 5H), 7.52-7.59 (m, 1H),7.37 (br. s., 1H), 7.17 (br. s., 1H), 7.06 (d, J=8.03 Hz, 1H), 4.90 (s,2H), 4.24 (t, J=5.27 Hz, 2H), 4.00 (t, J=5.27 Hz, 2H), 2.17 (ddd,J=13.55, 8.28, 5.27 Hz, 1H), 0.93-1.10 (m, 2H), 0.66-0.82 (m, 2H).

Intermediate 259A:2-(3,5-Dichloro-4-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

To a stirred solution of 5-bromo-1,3-dichloro-2-fluorobenzene (1.5 g,6.15 mmol) in 1,4-dioxane (3.0 mL) was added B₂Pin₂ (2.343 g, 9.23mmol), PdCl₂(dppf)-CH₂C2 (0.301 g, 0.369 mmol), KOAc (1.509 g, 15.38mmol) and the reaction mixture was degasified with nitrogen for 10 min.The reaction mixture was then heated to 100° C. and stirred for 4 h. Thereaction mixture was diluted with ethyl acetate filtered through CELITE®and the filtrate was washed with water, dried over sodium sulfate,filtered and the filtrate concentrated. The crude compound was purifiedby silica gel chromatography (24 g REDISEP® column, eluting with 3%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford the Intermediate 259A as a colorless oil (1.3 g,72%). ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.71 (d, J=6.53 Hz, 2H), 1.29-1.32(m, 12H).

Intermediate 259B: tert-Butyl3-carbamoyl-2-(3,5-dichloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred suspension of Intermediate 156C (1.2 g, 3.06 mmol) in1,4-dioxane (10.0 mL) was added Intermediate 259A (1.335 g, 4.59 mmol),K₃PO₄ (1.948 g, 9.18 mmol) and the reaction mixture was degasified for10 min. PdCl₂(dppf)-CH₂Cl₂ (0.150 g, 0.184 mmol) was added and thereaction mixture was heated to 80° C. and stirred for 8 h. The reactionmixture was diluted with ethyl acetate (20 mL), washed with water,brine, dried over Na₂SO₄, filtered and the filtrate concentrated. Thecrude compound was purified by silica gel chromatography (24 g REDISEP®column, eluting with 60% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford the Intermediate 259B asa white solid (1.1 g, 80%). MS(ES): m/z=429 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) ppm 7.85 (d, J=6.53 Hz, 2H), 7.35 (br. s., 2H), 4.75 (s, 2H),4.17 (t, J=5.52 Hz, 2H), 3.84 (t, J=5.52 Hz, 2H), 1.45 (s, 9H).

Intermediate 259C:2-(3,5-Dichloro-4-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 259B (1.1 g, 2.56 mmol) in DCM (5.0 mL)was added TFA (10 mL, 130 mmol) and the resulting solution was stirredat RT for 3 h. The volatiles were removed under reduced pressure. Theresidue was added a saturated aqueous solution of NaHCO₃ and stirred for1 h. The solid was filtered and dried under vacuum to affordIntermediate 259C as an off-white solid (0.75 g, 89%). MS(ES): m/z=329[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.89 (d, J=6.53 Hz, 2H), 7.27(br. s., 2H), 3.95-4.13 (m, 4H), 3.13 (t, J=5.52 Hz, 2H), 2.68 (br. s.,1H).

Compound 259:N⁵-(4-Cyanophenyl)-2-(3,5-dichloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 259C (0.1 g, 0.304 mmol) in THF (2 mL) wasadded TEA (0.085 mL, 0.608 mmol) and the resulting solution was stirredat RT for 30 min. 4-Isocyanatobenzonitrile (0.053 g, 0.365 mmol) wasadded and the reaction mixture was stirred at RT for 2 h. The reactionmixture was diluted with EtOAc, washed with water, brine, dried overNa₂SO₄, filtered and the filtrate concentrated. The crude product waspurified by preparative HPLC to afford Compound 259 as an off-whitesolid (0.02 g, 22%). HPLC retention times 10.01 min. and 9.05 min.(Methods A and B respectively). MS(ES): m/z=473 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 9.39 (s, 1H), 7.88 (d, J=6.53 Hz, 2H), 7.63-7.76 (m, 4H),7.26-7.51 (m, 2H), 4.93 (s, 2H), 4.26 (t, J=5.52 Hz, 2H), 4.01 (t,J=5.52 Hz, 2H).

The Compounds shown in Table 13 have been prepared similar to Compound259 by coupling of Intermediate 259C with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 13 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods260

2-(3,5-Dichloro-4- fluorophenyl)-N⁵-(3,4- difluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 486 10.44   8.90 A B 261

2-(3,5-Dichloro-4- fluorophenyl)-N⁵-(3,5- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 518 [M + H]11.006 12.208 B A 262

2-(3,5-Dichloro-4- fluorophenyl)-N⁵-(4- (trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 518.0 10.48 11.39  B A 263

N⁵-(3-Chloro-4- cyanophenyl)-2-(3,5- dichloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 507  1.669 1.769 E L 264

N⁵-(4-Cyano-3- fluorophenyl)-2-(3,5- dichloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(4H)- dicarboxamide 492  1.602 1.707 E L

Intermediate 265A: 3-Bromo-5-chloro-N,N-dimethylaniline

To a stirred solution of 3-bromo-5-chloroaniline (0.3 g, 1.453 mmol) inacetonitrile (5.0 mL) was added 37% aqueous formaldehyde solution (1.082mL, 14.53 mmol) followed by sodium cyanoborohydride (0.274 g, 4.36 mmol)at RT. Acetic acid (0.3 mL, 5.24 mmol) was added over a period of 10 minand the reaction mixture was stirred at RT for 16 h. To the reactionmixture was added a 10% aqueous solution of NaOH and extracted withethyl acetate (2×15 mL). The combined organic layer was washed withwater, brine, dried over sodium sulfate, filtered and the filtrateconcentrated.

The crude compound was purified by silica gel chromatography (12 gREDISEP® column, eluting with 20% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to afford theIntermediate 265A as a pale yellow solid (0.25 g, 73%). ¹H NMR (300 MHz,chloroform-d) δ ppm 6.83 (t, J=1.70 Hz, 1H), 6.68-6.72 (m, 1H),6.56-6.60 (m, 1H), 2.96 (s, 6H).

Intermediate 265B:3-Chloro-N,N-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

To a stirred solution of Intermediate 265A (0.25 g, 1.066 mmol) in1,4-dioxane (8 mL) was added B₂Pin₂ (0.677 g, 2.67 mmol), KOAc (0.262 g,2.67 mmol), PdCl₂(dppf)₂-CH₂Cl₂ adduct (0.052 g, 0.064 mmol) and thereaction mixture was purged with nitrogen for 5 min. The reactionmixture was then heated to 90° C. and stirred 16 h. The reaction mixturewas concentrated and the residue was extracted with ethyl acetate (3×15mL). The combined organic layer was washed with water, brine, dried overNa₂SO₄, filtered and the filtrate concentrated. The crude product waspurified by silica gel chromatography (24 g REDISEP® column, elutingwith 2% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford the Intermediate 265B as an off-whitesolid (0.26 g, 87%). MS(ES): m/z=200 [M−82)]; ¹H NMR (400 MHz,chloroform-d) δ ppm 7.11 (d, J=2.01 Hz, 1H), 7.01 (d, J=2.01 Hz, 1H),6.70-6.78 (m, 1H), 2.96 (s, 6H), 1.31-1.35 (m, 12H).

Intermediate 265C: tert-Butyl3-carbamoyl-2-(3-chloro-5-(dimethylamino)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred suspension of Intermediate 156C (1.0 g, 2.55 mmol) in1,4-dioxane (20.0 mL) was added Intermediate 265B (1.077 g, 3.82 mmol),K₃PO₄ (1.624 g, 7.65 mmol), PdCl₂(dppf)-CH₂Cl₂ (0.125 g, 0.153 mmol) andthe reaction mixture was purged with nitrogen for 10 min. The reactionmixture was then heated to 80° C. and stirred for 8 h. The reactionmixture was concentrated and extracted with ethyl acetate (3×20 mL). Thecombined organic layer was washed with water, brine, dried over Na₂SO₄,filtered and the filtrate concentrated. The crude product was purifiedby silica gel chromatography (24 g REDISEP® column, eluting with 1% MeOHin chloroform). Fractions containing the product were combined andevaporated to afford the Intermediate 265C as brown solid (0.55 g, 51%).MS(ES): m/z=420 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.26-7.35 (m,1H), 6.87-7.01 (m, 3H), 6.71 (t, J=2.01 Hz, 1H), 4.73 (s, 2H), 4.15 (t,J=5.27 Hz, 2H), 3.84 (t, J=5.52 Hz, 2H), 2.93 (s, 6H), 1.46 (s, 9H).

Intermediate 265D:2-(3-Chloro-5-(dimethylamino)phenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 265C (0.55 g, 1.310 mmol) in DCM (10 mL)was added TFA (2.027 mL, 26.3 mmol) dropwise at 0° C. and the resultingsolution was warmed to RT and stirred for 4 h. The reaction mixture wasconcentrated and to the crude product was added a saturated aqueoussolution of NaHCO₃ at 0° C. and stirred at RT for 1 h. The solidseparated was filtered and dried to afford Intermediate 265D as a brownsolid (0.24 g, 57%). MS(ES): m/z=320 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δppm 7.20 (br. s., 1H), 6.86-7.04 (m, 3H), 6.68 (t, J=2.01 Hz, 1H),3.88-4.04 (m, 4H), 3.12 (d, J=4.02 Hz, 2H), 2.93 (s, 6H) 2.50 (br. s,1H).

Compound 265:2-(3-Chloro-5-(dimethylamino)phenyl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 265 was synthesized from Intermediate 265D using a syntheticsequence analogous to the preparation of Compound 259. HPLC retentiontimes 8.19 min. and 8.53 min. (Methods A and B respectively). MS(ES):m/z=464 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.41 (s, 1H), 7.79-7.62(m, 4H), 7.37 (br. s., 1H), 7.07-6.89 (m, 3H), 6.72 (t, J=2.0 Hz, 1H),4.90 (s, 2H), 4.24 (t, J=5.3 Hz, 2H), 4.06-3.94 (m, 2H), 3.01-2.86 (s,6H).

The Compounds shown in Table 14 have been prepared similar to Compound265 by coupling of Intermediate 265D with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 14 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min) Methods 266

2-(3-Chloro-5- (dimethylamino)phenyl)- N⁵-(4-cyano-3-(trifluoromethyl)phenyl)- 6,7-dihydropyrazolo[1,5- a]pyrazine-3,5(H)-dicarboxamide 532 10.286  9.755 A B 267

2-(3-Chloro-5- (dimethylamino)phenyl)- N⁵-(4-cyano-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 478  9.349  8.940A B 268

N⁵-(3-Chloro-4- cyanophenyl)-2-(3- chloro-5-(dimethyl-amino)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 498  9.913  9.452 A B 269

2-(3-Chloro-5- (dimethylamino)phenyl)- N⁵-(4-cyano-3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 482  9.557  9.132A B

Intermediate 270A:2-Iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of Intermediate 156C (1.500 g, 3.82 mmol) in DCM(15 mL) was added TFA (8 mL) slowly at RT and the reaction mixture wasallowed to stir at RT for 2 h. The reaction mixture was diluted with a10% aqueous solution of NaOH and the solid formed was filtered through aBuchner funnel, dried under vacuum to afford Intermediate 270A (0.95 g,85%) as an off-white solid. MS(ES): m/z=293 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.23 (br. s., 1H), 6.78 (br. s., 1H), 4.02 (d, J=5.5 Hz,2H), 3.97 (t, J=5.5 Hz, 2H), 3.06 (q, J=5.0 Hz, 2H), 2.59 (t, J=5.5 Hz,1H).

Intermediate 270B:N⁵-(4-Cyanophenyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 270A (2.5 g, 6.16 mmol) in THF (100 mL)was added 4-cyanophenylisocyanate (1.065 g, 7.39 mmol) and the reactionmixture was stirred at room temperature for 2 h. The reaction mixturewas concentrated under reduced pressure and the residue was dissolved inDCM (50 ml), washed with a saturated aqueous solution of NaHCO₃, waterand brine. The organic layer was dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude product was triturated with diethylether (3×50 mL). The solid was filtered through a Buchner funnel andrinsed with hexane to afford Intermediate 270B as a white solid (2.5 g,93%). MS(ES): m/z=437 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.36 (s,1H), 7.59-7.77 (m, 4H), 7.43 (br. s., 1H), 6.89 (br. s., 1H), 4.90 (s,2H), 4.21 (t, J=5.27 Hz, 2H), 3.95 (d, J=5.52 Hz, 2H).

Compound 270:2-(5-Chloropyridin-3-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 270B (40 mg, 0.092 mmol),3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (32.9mg, 0.138 mmol) in 1,4-dioxane (2 mL) was added K₃PO₄ (58.4 mg, 0.275mmol) in water (0.5 ml) and the resulting reaction mixture was purgedwith N₂ for 5 min. PdCl₂(dppf)-CH₂Cl₂ adduct (4.49 mg, 5.50 μmol) wasadded, the reaction mixture was heated to 80° C. and stirred for 5 h.The reaction mixture was quenched with water and extracted with ethylacetate (3×5 mL). The combined organic layer was washed with water,brine, dried over Na₂SO₄, filtered and the filtrate concentrated toafford the crude compound, which was purified via preparative HPLC toafford Compound 270 as an off-white solid (20 mg, 51%). HPLC retentiontimes are 7.01 min. and 6.85 min. (Methods A and B). MS(ES): m/z=422[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.41 (s, 1H), 8.80 (d, J=1.51Hz, 1H), 8.63 (d, J=2.51 Hz, 1H), 8.15 (t, J=2.01 Hz, 1H), 7.71 (q,J=9.04 Hz, 4H), 7.37 (br. s., 2H), 4.95 (s, 2H), 4.29 (t, J=5.27 Hz,2H), 4.02 (t, J=5.27 Hz, 2H).

The Compounds shown in Table 15 have been prepared similar to Compound270 by Suzuki coupling of Intermediate 270B with various readilyavailable boronic acids.

TABLE 15 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods271

N⁵-(4-Cyanophenyl)-2-(3- methoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 415.2 7.85 7.88 B A 272

N⁵-(4-Cyanophenyl)-2-(2,5- dichlorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 454.8 1.33 E 273

N⁵-(4-Cyanophenyl)-2-(3,5- dichlorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 456 9.881 9.179 A B 274

N⁵-(4-Cyanophenyl)-2-(3- (methylsulfonamido)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 480.0 0.95 E275

N⁵-(4-Cyanophenyl)-2-(3,5- dimethylphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 415.0 1.36 E 276

N⁵-(4-Cyanophenyl)-2-(1- methyl-1H-indol-5-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 440.0 1.22 E 277

2-(Benzo[d][1,3]dioxol-5-yl)- N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 431.0 1.09 E 278

2-(5-Chloro-2- methoxyphenyl)-N⁵-(4- cyanophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.0 1.26 E 279

N⁵-(4-Cyanophenyl)-2-(3- (dimethylamino)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 430.0 1.23 E 280

N⁵-(4-Cyanophenyl)-2-(4- fluoro-3-methoxyphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 435.0 1.17 E 281

N⁵-(4-Cyanophenyl)-2-(3- (methylthio)phenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 433.0 1.26 E 282

N⁵-(4-Cyanophenyl)-2-(3,4- dimethylphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 415.0 1.35 E 283

N⁵-(4-Cyanophenyl)-2-(3- (dimethylcarbamoyl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 458.0 0.92 E284

N⁵-(4-Cyanophenyl)-2-(3- (trifluoromethoxy)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 471.0 1.45 E285

N⁵-(4-Cyanophenyl)-2-(3- fluoro-5-methoxyphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 435.0 1.22 E 286

N⁵-(4-Cyanophenyl)-2-(3- (methylsulfonyl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 482.0 0.93 E 287

N⁵-(4-Cyanophenyl)-2-(2,3- dichlorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 454.8 1.30 E 288

2-(3-Acetamidophenyl)-N⁵- (4-cyanophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 444.0 0.90 E 289

N⁵-(4-Cyanophenyl)-2-(m- tolyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 401.0 1.22 E 290

N⁵-(4-Cyanophenyl)-2-(4- (methylsulfonyl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 481.8 0.92 E 291

N⁵-(4-Cyanophenyl)-2-(3,4- difluorophenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 423.0 1.22 E

Intermediate 292A:3-Chloro-2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

To a solution of 5-bromo-3-chloro-2-fluoropyridine (0.5 g, 2.376 mmol)in 1,4-dioxane (2 mL) was added bis(pinacolato)diboron (0.724 g, 2.85mmol) and KOAc (0.350 g, 3.56 mmol) and the reaction mixture was purgedwith nitrogen for 10 min. PdCl₂(dppf)-CH₂Cl₂ adduct (0.097 g, 0.119mmol) was added and the reaction mixture was allowed to stir at 80 OCfor 3 h. The volatiles were removed under a reduced pressure and theresidue was extracted with EtOAc (3×20 mL). The combined organic layerwas concentrated and the residue was triturated with n-hexanes to affordIntermediate 292A (0.5 g, 82%) as a brown solid. MS(ES): m/z=176[M−84]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 8.34-8.39 (m, 1H), 8.17-8.26(m, 1H), 1.32 (s, 12H).

Intermediate 292B: tert-Butyl3-carbamoyl-2-(5-chloro-6-fluoropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (0.2 g, 0.510 mmol) in 1,4-dioxane(10 mL) was added Intermediate 292A (0.197 g, 0.765 mmol) and K₃PO₄(0.325 g, 1.53 mmol) in water (2 mL) and the resulting reaction mixturewas purging with N₂ for 10 min. PdCl₂(dppf)-CH₂Cl₂ adduct (0.025 g,0.031 mmol) was added and the reaction mixture was then allowed to heatto 80° C. and stir for 5 h. The reaction mixture was diluted with waterand extracted with ethyl acetate (3×25 mL). The combined organic layerwas washed with water, brine, dried over Na₂SO₄, and concentrated invacuo. The crude reaction mixture was purified by silica gelchromatography (24 g REDISEP® column, eluting with gradient from 0 to 2%MeOH in CHCl₃). Fractions containing the product were combined andevaporated to afford the Intermediate 292B (0.15 g, 74%) as an off-whitesolid. MS(ES): m/z=396 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.32-8.47(m, 2H), 7.29 (br. s., 2H), 4.79 (s, 2H), 4.15-4.27 (m, 2H), 3.86 (d,J=5.52 Hz, 2H), 1.44 (s, 9H).

Intermediate 292C:2-(5-Chloro-6-fluoropyridin-3-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate 292B (0.15 g, 0.379 mmol) in DCM (10 mL)at 0° C. was added TFA (0.146 mL, 1.895 mmol) and the resulting solutionwas stirred at RT for 3 h. The volatiles were removed under reducedpressure and the residue was treated with 10% aqueous solution of NaOH.The solid was filtered, washed with hexanes and dried in vacuo to affordIntermediate 292C (0.1 g, 94%) as a pale yellow solid. MS(ES): m/z=296[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.35-8.51 (m, 2H), 7.05-7.30(br. s, 2H), 3.96-4.16 (m, 4H), 3.14 (d, J=5.02 Hz, 2H), 2.61-2.74 (m,1H).

Compound 292:2-(5-Chloro-6-fluoropyridin-3-yl)-N⁵-(4-cyano-3-(trifluoromethyl)phenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of Intermediate 292C (20 mg, 0.067) and intermediate phenyl(4-cyano-3-(trifluoromethyl)phenyl)carbamate (24.86 mg, 0.081 mmol) inDMSO (3 mL) was stirred at RT for 6 h. The reaction mixture was dilutedwith water and the solid precipitated was filtered and dried. The crudewas purified by silica gel chromatography (4 g REDISEP® column, elutingwith a gradient from 0 to 5% MeOH in DCM). Fractions containing theproduct were combined and evaporated to afford the Compound 292 (12 mg,32%) as a pale yellow solid. MS(ES): m/z=439 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 9.60 (br s, 1H), 8.37-8.47 (m, 2H), 8.16 (d, J=2.01 Hz,1H), 8.05 (d, J=8.53 Hz, 1H), 7.93-7.99 (m, 1H), 7.24-7.43 (br s, 2H),4.98 (s, 2H), 4.25-4.33 (m, 2H), 4.04 (d, J=5.52 Hz, 2H).

The Compounds shown in Table 16 have been prepared similar to Compound292 by reaction of Intermediate 292C with respective anilinesphenylcarbamates or with readily available/in-situ generatedisocyanates.

TABLE 16 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods293

2-(5-Chloro-6-fluoropyridin- 3-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 441  8.10 7.84 A B 294

2-(5-Chloro-6-fluoropyridin- 3-yl)-N⁵-(4-cyano-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 454  8.60  8.31 AB 295

2-(5-Chloro-6-fluoropyridin- 3-yl)-N⁵-(4-cyano-3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 458  8.81  8.48 AB 296

N⁵-(3-Chloro-4- cyanophenyl)-2-(5-chloro-6- fluoropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 474 14.12 13.39 CD

Intermediate 297A:2,3-Dichloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

To a solution of 5-bromo-2,3-dichloropyridine (0.25 g, 1.102 mmol) inDMF (3 mL) was added KOAc (0.324 g, 3.31 mmol), bis(pinacolato)diboron(0.336 g, 1.322 mmol) and the resulting reaction mixture was purged withN₂ for 5 min. PdCl₂(dppf)-CH₂Cl₂ (0.048 g, 0.066 mmol) was added and thereaction mixture was heated to 90° C. and stirred for 18 h. The reactionmixture was cooled to RT, diluted with water and extracted with EtOAc(2×50 mL). The combined organic layer was dried over anhydrous Na₂SO₄,filtered and the filtrate concentrated under reduced pressure. The crudecompound was purified by silica gel chromatography (12 g REDISEP®column, eluting with a gradient from 0-10% of EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordthe Intermediate 297A (0.08 g, 25%). MS(ES): m/z=272.4 [M+H]⁺; ¹H NMR(300 MHz, DMSO-d₆) δ ppm 8.89 (d, J=2.3 Hz, 1H), 8.69 (d, J=2.3 Hz, 1H),1.17 (s, 12H).

Intermediate 297B: tert-Butyl3-carbamoyl-2-(5,6-dichloropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 156C (0.1 g, 0.255 mmol) andIntermediate 297A (0.070 g, 0.255 mmol) in 1,4-dioxane (2 mL was added asolution of Na₂CO₃ (0.081 g, 0.765 mmol) in water (0.5 mL) and thereaction mixture was purged with N₂ gas for 5 min. Pd(PPh₃)₄(0.015 g,0.013 mmol) was added and the reaction mixture was heated to 100° C. andstirred for 15 h. The reaction mixture was diluted with water andextracted with EtOAc (2×50 mL). The organic layer was washed with brine,dried over Na₂SO₄ and concentrated under reduced pressure. The crudecompound was purified by silica gel chromatography (12 g REDISEP®column, eluting with a gradient from 0-60% of EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate 297B (0.05 g, 43%) as an off-white solid. MS(ES): m/z=412.1[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 8.62 (d, J=1.9 Hz, 1H), 8.33 (s,1H), 7.66-7.52 (m, 1H), 7.34 (br. s., 1H), 4.77 (s, 2H), 4.20 (t, J=5.3Hz, 2H), 3.85 (t, J 5.3 Hz, 2H), 1.43 (s, 9H).

Intermediate 297C:2-(5,6-Dichloropyridin-3-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA

A solution of Intermediate 297B (0.35 g, 0.849 mmol) in DCM (15 mL) wasadded TFA (0.327 mL, 4.24 mmol) and the resultant solution was allowedto stir at RT for 1 h. The volatiles were removed under reduced pressureand the reaction mixture was triturated with diethyl ether to affordIntermediate 297C (0.3 g, 91%) as a pale yellow solid. MS(ES): m/z=312.0[M+H]⁺.

Intermediate 297:N⁵-(4-Cyanophenyl)-2-(5,6-dichloropyridin-3-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 297C (0.05 g, 0.082 mmol) and4-isocyanatobenzonitrile (0.012 g, 0.082 mmol) in THF (1 mL) was addedTEA (0.034 mL, 0.246 mmol) and the resulting reaction mixture wasallowed to stir at RT for 18 h. The reaction mixture was diluted withEtOAc, washed with water and brine. The organic layer was dried overNa₂SO₄, filtered and the filtrate concentrated under reduced pressure.The crude product was purified by preparative HPLC to afford Compound297 (0.006 g, 16%) as an off-white solid. The HPLC retention times are1.357 min. and 1.365 min. (Methods E and L respectively). MS(ES):m/z=456.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.40 (s, 1H), 8.64 (d,J=2.5 Hz, 1H), 8.34 (d, J=2.0 Hz, 1H), 7.77-7.63 (m, 4H), 7.43 (br. s.,1H), 7.33 (br. s., 1H), 4.94 (s, 2H), 4.28 (t, J=5.3 Hz, 2H), 4.01 (t,J=5.3 Hz, 2H).

The Compound shown in Table 17 has been prepared similar to Compound 297by coupling of Intermediate 297C with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 17 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods298

N⁵-(4-Cyano-3- fluorophenyl)-2-(5,6- dichloropyridin-3-yl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide 474.0 8.7169.350 A B

Intermediate 299A:N⁵-(3,4-Dichlorophenyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 270A (350 mg, 1.198 mmol) in THF (20 mL)was added TEA (0.501 mL, 3.59 mmol), 1,2-dichloro-4-isocyanatobenzene(270 mg, 1.438 mmol) and the reaction mixture was stirred at roomtemperature for 2 h. The reaction mixture was concentrated under reducedpressure and the residue was dissolved in ethyl acetate (50 mL), washedwith a saturated aqueous solution of NaHCO₃, water and brine. Theorganic layer was dried over Na₂SO₄, filtered and the filtrateconcentrated. The crude product was triturated with diethyl ether (3×50mL) and the solid was filtered through a Buchner funnel and rinsed withhexane to afford Intermediate 299A as a white solid (350 mg 59%).MS(ES): m/z=477.8 [M−H]⁻; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.17 (s, 1H),7.81 (d, J=2.5 Hz, 1H), 7.53-7.41 (m, 3H), 6.90 (br. s., 1H), 4.89 (s,2H), 4.24-4.15 (m, 2H), 3.92 (t, J=5.3 Hz, 2H).

Compound 299:2-(5-Chloropyridin-3-yl)-N⁵-(3,4-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 299A (40 mg, 0.083 mmol),(5-chloropyridin-3-yl)boronic acid (19.67 mg, 0.125 mmol) in 1,4-dioxane(1.5 mL) was added K₃PO₄ (53.1 mg, 0.250 mmol) in water (0.5 mL) and theresulting reaction mixture was purged with N₂ for 5 min.PdCl₂(dppf)-CH₂Cl₂ adduct (3.4 mg, 4.17 μmol) was added, the reactionmixture was heated to 80° C. and stirred for 5 h. The reaction mixturewas quenched with water and extracted with ethyl acetate (3×5 mL). Thecombined organic layer was washed with water, brine, dried over Na₂SO₄,filtered and the filtrate concentrated to afford. The crude compound waspurified via preparative HPLC to afford Compound 299 as an off-whitesolid (18 mg, 46%). The HPLC retention times are 1.357 min. and 1.365min. (Methods J and K respectively). MS(ES): m/z=464.8 [M+H]⁺; ¹H NMR(400 MHz, methanol-d₄) δ ppm 8.80 (d, J=2.01 Hz, 1H), 8.58 (d, J=2.51Hz, 1H), 8.19 (t, J=2.26 Hz, 1H), 7.74 (d, J=2.51 Hz, 1H), 7.27-7.48 (m,2H), 5.02 (s, 2H), 4.29-4.40 (m, 2H), 4.09 (t, J=5.27 Hz, 2H).

The Compounds shown in Table 18 have been prepared similar to Compound299 by coupling of Intermediate 299A with various readily availableboronic acids.

TABLE 18 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods300

2-(4-Chloro-3-fluorophenyl)- N⁵-(3,4-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 483 10.58  9.96 AB 301

2-(3-Chloro-4-fluoro-5- methoxyphenyl)-N⁵-(3,4- dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 513 10.72 10.19 AB 302

N⁵-(3,4-Dichlorophenyl)-2- (3,5-dichlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 498 11.42 10.82 AB 303

N⁵-(3,4-Dichlorophenyl)-2- (3-methoxyphenyl)-6,7- dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 460  1.47  1.47 E L

Intermediate 304A: 5-Bromo-4-chloro-2-hydrazinylpyridine

To a stirred solution of 2,5-dibromo-3-chloropyridine (0.5 g, 1.843mmol) in pyridine (2.5 mL) was added hydrazine hydrate (0.099 mL, 2.027mmol) and the reaction mixture was heated to 80° C. for 16 h. Thereaction mixture was concentrated and azeotroped with toluene to affordIntermediate 304A (0.4 g, 87%) as a yellow solid which was taken to thenext step without further purification. MS(ES): m/z=224[M+2]⁺.

Intermediate 304B:6-Bromo-8-chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridine

A solution of Intermediate 304A (0.9 g, 4.05 mmol) in acetic acid (10mL, 175 mmol) was heated to 110° C. and stirred for 16 h. The reactionmixture was concentrated under reduced pressure and the crude compoundwas purified by silica gel chromatography (12 g REDISEP® column, elutingwith a gradient of 3-8% MeOH in CHCl₃). Fractions containing the productwere combined and evaporated to afford Intermediate 304B (0.3 g, 27%) asan off-white solid. MS(ES): m/z=248 [M+2]⁺; ¹H NMR (400 MHz, DMSO-d₆) δppm 8.79 (d, J=1.5 Hz, 1H), 7.80 (d, J=1.5 Hz, 1H), 2.70-2.68 (m, 3H).

Intermediate 304C:8-Chloro-3-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,4]triazolo[4,3-a]pyridine

To a solution of Intermediate 304B (0.5 g, 2.028 mmol) in dioxane (10mL) was added bis(pinacolato)diboron (1.030 g, 4.06 mmol), KOAc (0.597g, 6.09 mmol) and the resulting reaction mixture was degasified with N₂for 5 min. PdCl₂(dppf)-CH₂Cl₂ adduct (0.083 g, 0.101 mmol) was added andthe reaction mixture was heated to 80° C. and stirred for 4 h. Thereaction mixture concentrated under reduced pressure and the residue wasextracted with ethyl acetate. The combined organic layer was washed withwater, dried over Na₂SO₄, filtered and the filtrate concentrated toafford Intermediate 304C (0.5 g, 70%) as a brown oil which was taken toSuzuki coupling without further purification.

Intermediate 304D: tert-Butyl3-carbamoyl-2-(8-chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (0.5 g, 1.275 mmol) and Intermediate304C (1.123 g, 3.82 mmol) in dioxane (2 mL) was added a solution ofK₃PO₄ (0.812 g, 3.82 mmol) in water (0.5 mL) and the reaction mixturewas degasified with N₂ for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.078 g, 0.096mmol) was added and the reaction mixture was heated to 80° C. andstirred for 16 h. The reaction mixture was diluted with ethyl acetateand filtered through CELITE®. The filtrate was washed with water, driedover Na₂SO₄, filtered and the filtrate concentrated. The crude compoundwas purified by silica gel chromatography (12 g REDISEP® column, elutingwith a gradient of 60-100% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate 304D (0.160g, 23%) as brown oil. MS(ES): m/z=430[M−H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δppm 8.70 (d, J=1.1 Hz, 1H), 7.72 (d, J=1.5 Hz, 1H), 7.55 (d, J=8.3 Hz,2H), 4.80 (s, 2H), 4.20 (t, J=5.5 Hz, 2H), 3.86 (t, J=5.5 Hz, 2H),2.74-2.67 (m, 3H), 1.45 (s, 9H).

Intermediate 304E:2-(8-Chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideHCl salt

A solution of Intermediate 304D (0.34 g, 0.787 mmol) in 4M HCl indioxane (3 mL, 0.787 mmol) was stirred at RT for 3 h. The volatiles wereremoved under a reduced pressure and the residue was triturated withdiethyl ether to afford Intermediate 304E (0.14 g, 48%) as a brown solidMS(ES): m/z=332[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 10.00 (br. s.,2H), 8.73 (d, J=1.1 Hz, 1H), 7.73 (d, J=1.5 Hz, 1H), 4.60 (br. s., 2H),4.44 (t, J=5.5 Hz, 2H), 3.75-3.63 (t, J=5.5 Hz, 2H), 2.77-2.67 (m, 3H).

Compound 304:2-(8-Chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 304E (0.05 g, 0.151 mmol) in THF (1 mL)was added 4-isocyanatobenzonitrile (0.22 g, 0.151 mmol) followed by andTEA (0.063 mL, 0.452 mmol) and the resulting solution was allowed tostir at RT for 12 h. The reaction mixture was quenched with water (2 mL)and concentrated under vacuum. The crude product was purified bypreparative HPLC to afford Compound 304 (2 mg, 3%) as a white solid.HPLC retention times 1.03 min. and 1.02 min. (Methods E and Lrespectively). MS(ES): m/z=476 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm9.42 (s, 1H), 8.72 (d, J=1.0 Hz, 1H), 7.75-7.65 (m, 5H), 7.46-7.15 (m,2H), 4.97 (s, 2H), 4.28 (t, J=5.3 Hz, 2H), 4.02 (t, J=5.3 Hz, 2H), 2.72(s, 3H).

The Compound shown in Table 19 has been prepared similar to Compound 304by coupling of Intermediate 304E with in-situ generated isocyanate fromrespective aniline.

TABLE 19 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods305

2-(8-Chloro-3-methyl- [1,2,4]triazolo[4,3-a] pyridin-6-yl)-N⁵-(3-chloro-4-cyanophenyl)- 6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide 571 1.19 1.18 E L

Intermediate 306A: 6-Bromo-8-chloro-[1,2,4]triazolo[4,3-a]pyridine

A solution of Intermediate 304A (4 g, 17.98 mmol) in diethoxymethylacetate (20 mL, 17.98 mmol) was stirred at RT for 16 h. The reactionmixture was diluted with water and extracted with EtOAc (3×100 mL). Thecombined organic layer was dried over Na₂SO₄, filtered and the filtrateconcentrated under vacuum. The crude compound was purified by silica gelchromatography (40 g REDISEP® column, eluting with gradient from 0-7%MeOH in CHCl₃). Fractions containing the product were combined andevaporated to afford Intermediate 306A (1.4 g, 30%) as an off-whitesolid. MS(ES): m/z=232 [M=H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.28 (s,1H), 8.93 (d, J=1.51 Hz, 1H), 7.86 (d, J=1.00 Hz, 1H).

Intermediate 306B:8-Chloro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,4]triazolo[4,3-a]pyridine

To a stirred solution of Intermediate 306A (0.5 g, 2.151 mmol) indioxane (2 mL) was added bis(pinacolato)diboron (1.092 g, 4.30 mmol),KOAc (0.633 g, 6.45 mmol) and the reaction mixture was degasified withN₂ for 5 min. PdCl₂(dppf)-CH₂Cl₂ (0.088 g, 0.108 mmol) was added and thereaction mixture was heated to 80° C. and stirred for 4 h. The reactionmixture was cooled to RT filtered through CELITE® and the CELITE® padwas washed with ethyl acetate (100 mL). The filtrate was washed withwater, dried over Na₂SO₄, filtered and the filtrate concentrated toafford crude Intermediate 306B (200 mg, 40%) which was taken to Suzukicoupling without purification.

Intermediate 306C: tert-Butyl3-carbamoyl-2-(8-chloro-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 306C was synthesized from Intermediate 306B using asynthetic sequence analogous to the preparation of Intermediate 304D.MS(ES): m/z=418 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 9.46 (s, 1H),8.93 (d, J=1.1 Hz, 1H), 7.77 (d, J=1.5 Hz, 1H), 7.38-7.18 (m, 2H), 4.79(s, 2H), 4.19 (t, J=4.9 Hz, 2H), 3.86 (t, J=1.0 Hz, 2H) 1.43 (s, 9H).

Intermediate 306D:2-(8-Chloro-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA salt

Intermediate 306D was synthesized from Intermediate 306C using asynthetic sequence analogous to the preparation of Intermediate 304E.MS(ES): m/z=318 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 10.07 (br. s.,2H), 9.47 (s, 1H), 8.96 (d, J=1.5 Hz, 1H), 7.77 (d, J=1.1 Hz, 1H),7.50-7.22 (m, 2H), 4.58 (br. s., 2H), 4.44 (t, J=5.5 Hz, 2H), 3.68 (t,J=5.5 Hz, 2H).

Compound 306:2-(8-Chloro-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 306 was synthesized from Intermediate 306D using a syntheticsequence analogous to the preparation of Compound 304. HPLC retentiontimes 0.98 min. and 1.01 min. (Methods E and L respectively). MS(ES):m/z=462 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.46 (s, 1H), 9.42 (s,1H), 8.95 (d, J=1.5 Hz, 1H), 7.78 (d, J=1.5 Hz, 1H), 7.74-7.65 (m, 4H),7.41-7.21 (m, 2H), 4.95 (s, 2H), 4.28 (t, J=5.3 Hz, 2H), 4.02 (t, J=5.5Hz, 2H).

The Compound shown in Table 20 has been prepared similar to Compound 306by coupling of Intermediate 306D with in-situ generated from respectiveanilines.

TABLE 20 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods307

N⁵-(3-Chloro-4- cyanophenyl)-2-(8-chloro- [1,2,4]triazolo[4,3-a]pyridin-6-yl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 496 1.17 1.17 E L

Intermediate 308A: (5-Bromo-3-chloropyridin-2-yl) methanol

A solution of 2,5-dibromo-3-chloropyridine (3.0 g, 11.06 mmol) intoluene (5 mL) was cooled to −78° C. under N₂. To this solution wasadded n-BuLi (8.29 mL, 13.27 mmol) dropwise and allowed to stir for 2 hat −78° C. prior to addition of DMF (1.712 mL, 22.11 mmol). The reactionmixture was allowed to warm to RT. To this reaction mixture was addedMeOH (3 mL) and NaBH₄ (0.418 g, 11.06 mmol) and stirred at RT for 30min. The reaction mixture was quenched with saturated aq. ammoniumchloride solution and extracted with ethyl acetate (2×50 mL). Thecombined organic layer was washed with brine, dried over anhydrousNa₂SO₄, filtered and the filtrate concentrated. The crude reactionmixture was purified by silica gel chromatography (24 g REDISEP® column,eluting with a gradient of 0-10% EtOAc in hexanes). Fractions containingthe product were combined and evaporated to afford the Intermediate 308A(2.6 g, 53%) as a pale yellow crystals. ¹H NMR (400 MHz, DMSO-d₆) δ ppm8.66 (d, J=2.01 Hz, 1H), 8.31 (s, 1H), 5.33 (d, J=12.05 Hz, 1H), 4.61(s, 2H).

Intermediate 308B: (5-Bromo-3-chloropyridin-2-yl) methylmethanesulfonate

To a cooled solution of Intermediate 308A (150 mg, 0.674 mmol) in DCM (3mL) at 5° C. was added TEA (94 L, 0.674 mmol) followed by the slowaddition of methanesulfonyl chloride (54.4 μL, 0.674 mmol). Theresulting reaction mixture was stirred for 2 h at the same temperature.The reaction mixture was diluted with DCM (20 mL), washed with water andbrine. The organic layer was dried over Na₂SO₄ and evaporated undervacuum. The crude Intermediate 308B (2.7 g, 100%) was taken to the nexttransformation without any purification. MS(ES): m/z=302.4 [M+H]⁺.

Intermediate 308C: (5-Bromo-3-chloropyridin-2-yl)methanamine

A solution of Intermediate 308B (2.7 g, 5.84 mmol) in IPA (50 mL) wassaturated with NH₃ gas and the resulting solution was allowed to stir atRT for 12 h. The volatiles were removed under vacuum and the crudeproduct was triturated with n-hexanes to afford Intermediate 308C (1.0g, 77%) as a pale yellow solid. MS(ES): m/z=223.4. ¹H NMR (400 MHz,DMSO-d₆) δ ppm 8.80 (d, J=2.01 Hz, 1H), 8.08-8.65 (m, 1H), 6.82 (br. s.,2H), 4.27 (s, 2H).

Intermediate 308D: N-((5-Bromo-3-chloropyridin-2-yl)methyl)formamide

A solution of Intermediate 308C (600 mg, 1.896 mmol) in formic acid (10mL, 9.48 mmol) was heated to 100° C. and stirred for 12 h. The reactionmixture was cooled to 0° C. and the pH was carefully adjusted to 8 bythe slow addition of 25% aqueous solution of ammonium hydroxide. Thereaction mixture was diluted with water and the aqueous layer wasextracted with dichloromethane (3×10 mL). The combined organic layer wasdried over Na₂SO₄, filtered and the filtrate concentrated under vacuumto afford Intermediate 308D (300 mg, 63%). The crude product was usedfor the next step without further purification. MS(ES): m/z=251.3[M+H]⁺.

Intermediate 308E: 6-Bromo-8-chloroimidazo[1,5-a]pyridine

To a solution of Intermediate 308D (300 mg, 1.202 mmol) in toluene (5mL) was added phosphoryl trichloride (1073 mg, 7 mmol) slowly and thereaction mixture was heated to 100° C. and stirred for 4 h. The reactionmixture was cooled to 0° C. and carefully quenched with ice-cold water.The pH of the reaction mixture was adjusting to 9 with an aq. solutionof 25% ammonium hydroxide and extracted with dichloromethane (3×10 mL).The combined organic layer was dried over Na₂SO₄, and concentrated. Thecrude reaction mixture was purified by silica gel chromatography (12 gREDISEP® column, eluting with a gradient of 0-6% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordthe Intermediate 308E (110 mg, 40%) as a brown oil. MS(ES): m/z=233.3[M+H]⁺.

Intermediate 308F:8-Chloro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,5-a]pyridine

To a solution of Intermediate 308E (50 mg, 0.216 mmol) in DMF (2 mL) wasadded KOAc (63.6 mg, 0.648 mmol), bis(pinacolato)diboron (65.8 mg, 0.259mmol) and the reaction mixture was purged with N₂ for 5 min.Pd(dppf)Cl₂CH₂Cl₂ (9.48 mg, 0.013 mmol) was added and the reactionmixture was heated to 90 OC and stirred for 18 h. The reaction mixturewas diluted with water and extracted with ethyl acetate (2×25 mL). Thecombined organic layer was dried over anhydrous Na₂SO₄ and concentratedunder reduced pressure to afford crude Intermediate 308F (50 mg, 70%)which was taken to Suzuki coupling without further purification.

Intermediate 308G: tert-Butyl3-carbamoyl-2-(8-chloroimidazo[1,5-a]pyridin-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (20 mg, 0.051 mmol) and Intermediate308F (78 mg, 0.056 mmol) in DMF (1 mL) was added a solution of Na₂CO₃(16.21 mg, 0.153 mmol) in water (1 mL) and the resulting solution waspurged with N₂ gas for 5 min. Pd(PPh₃)₄(2.95 mg, 2.55 mmol) was addedand the reaction mixture was heated to 100° C. and allowed to stir for18 h. The reaction mixture was diluted with water and extracted withethyl acetate (2×25 mL). The combined organic layer was dried overanhydrous Na₂SO₄ and concentrated under reduced pressure. The crudereaction mixture was purified by silica gel chromatography (12 gREDISEP® column, eluting with a gradient of 0-6% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordIntermediate 308G (20 mg, 7%). MS(ES): m/z=417.5 [M+H]⁺.

Compound 308:2-(8-Chloroimidazo[1,5-a]pyridin-6-yl)-N-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 308G (30 mg, 5.04 mmol) in DCM (2 mL) wasslowly added TFA (0.776 L, 10.08 mmol) and stirred for 2 h. Thevolatiles were evaporated under vacuum and the residue was dissolved inTHF (2 mL). 4-Isocyanatobenzonitrile (0.726 mg, 5.04 μmol) and TEA(1.404 μl, 10.08 μmol) were added and the reaction mixture was stirredat RT for 12 h. The reaction mixture was quenched with water andextracted with EtOAc (3×5 mL). The combined organic layer was dried overNa₂SO₄, filtered and the filtrate evaporated. The crude product waspurified by preparative HPLC to afford Compound 308 (21 mg, 41%) as apale yellow solid. The HPLC retention times are 2.063 min. and 1.801min. (Methods E and L respectively); MS(ES): m/z=461.2 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.39 (s, 1H), 8.76 (s, 1H), 7.62-7.77 (m, 5H),7.18-7.25 (m, 2H), 7.08 (s, 1H), 6.95 (s, 1H), 4.94 (s, 2H), 4.26 (t,J=5.05 Hz, 2H), 4.01 (t, J=5.21 Hz, 2H).

Intermediate 309A: 4-Bromo-2-chloro-6-nitrophenol

To a stirred solution of 4-bromo-2-chlorophenol (15.0 g, 72.3 mmol) inacetic acid (60 mL) was slowly added HNO₃ (9.23 mL, 145 mmol) over aperiod of 15 min and the reaction mixture was stirred at RT for 1 h. Thereaction was quenched with ice-cold water and the pale yellow solid wasfiltered and dried. The crude compound was purified by silica gelchromatography (120 g REDISEP® column, eluting a gradient from 0 to 20%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford the Intermediate 309A (16.2 g, 89%) as a paleyellow solid. MS(ES): m/z=250 [M−1]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm11.43 (br. s., 1H), 8.05-8.12 (m, 2H).

Intermediate 309B: 2-Amino-4-bromo-6-chlorophenol

To a stirred solution of Intermediate 309A (10 g, 21.79 mmol) in EtOH(80.0 mL) was added saturated aq. solution of NH₄Cl (80 mL, 218 mmol)followed by iron powder (9.73 g, 174 mmol). The resulting suspension washeated to 80° C. and allowed to stir for 2 h. The reaction mixture wascooled to RT, filtered through CELITE® and the filtrate wasconcentrated. The reaction mixture was diluted with EtOAc (100 mL),washed with water and brine. The organic layer was dried over sodiumsulfate, filtered and the filtrate concentrated under reduced pressure.The crude compound was purified by silica gel chromatography (120 gREDISEP® column, eluting with a gradient from 0 to 5% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate 309B (3.02 g, 62%) as a brown solid. MS(ES): m/z=221[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.00 (br. s., 1H), 6.50-6.76 (m,2H), 5.21 (br. s., 2H).

Intermediate 309C: 5-Bromo-7-chlorobenzo[d]oxazole

A suspension of Intermediate 309B (0.7 g, 3.15 mmol) intriethylorthoformate (14.0 ml, 84 mmol) was stirred at 140° C. for 3 h.The reaction mixture was cooled to RT, diluted with water and extractedwith EtOAc (3×25 mL). The combined organic layer was washed with brine,dried over sodium sulfate, filtered and the filtrate concentrated underreduced pressure. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with a gradient from 0 to5% EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford Intermediate 309C as an off-white solid (0.55 g,75%). MS(ES): m/z=233 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 8.93 (s,1H), 8.10 (d, J=1.51 Hz, 1H), 7.86 (d, J=1.51 Hz, 1H).

Intermediate 309D:7-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) benzo[d]oxazole

To a stirred solution of Intermediate 309C (0.7 g, 3.01 mmol) in1,4-dioxane (8.0 mL) was added bis(pinacolato)diboron (1.147 g, 4.52mmol) and KOAc (0.739 g, 7.53 mmol) and the reaction mixture was purgedwith N₂ for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.148 g, 0.181 mmol) was addedand the reaction mixture was heated to 90° C. and stirred for 16 h. Thereaction mixture was concentrated and extracted with ethyl acetate (3×25mL). The combined organic layer was washed with water, brine, dried oversodium sulfate and concentrated. The crude reaction mixture was purifiedby silica gel chromatography (24 g REDISEP® column, eluting with agradient from 0 to 5% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford the Intermediate 309D(0.71 g, 84%) as a white solid. MS(ES): m/z=279 [M+H]⁺; ¹H NMR (300 MHz,DMSO-d₆) δ ppm 8.92 (s, 1H), 7.94-8.00 (m, 1H), 7.71 (s, 1H), 1.33 (s,12H).

Intermediate 309E: tert-Butyl3-carbamoyl-2-(7-chlorobenzo[d]oxazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred suspension of Intermediate 309D (0.7 g, 1.785 mmol) in1,4-dioxane (2.0 mL) was added Intermediate 156C (1.247 g, 4.46 mmol),K₃PO₄ (2.68 mL, 5.35 mmol) and the reaction mixture was purged with N₂for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.087 g, 0.107 mmol) was added and thereaction mixture was heated to 80° C. and stirred for 8 h. The reactionmixture was concentrated and extracted with ethyl acetate (3×25 mL). Thecombined organic layer was washed with water, brine, dried over sodiumsulfate and concentrated. The crude was purified by silica gelchromatography (24 g REDISEP® column, eluting with a gradient from 0 to1% MeOH in chloroform) to afford Intermediate 309E (0.31 g, 97%) as anoff-white solid. MS(ES): m/z=418 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm8.90 (s, 1H), 8.01 (d, J=1.51 Hz, 1H), 7.81 (s, 1H), 7.11-7.35 (m, 2H),4.73 (s, 2H), 4.14 (t, J=5.29 Hz, 2H), 3.84-3.86 (t, 2H), 1.45 (s, 9H).

Intermediate 309F:2-(7-Chlorobenzo[d]oxazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of Intermediate 309E (0.3 g, 0.718 mmol) in DCM(3.0 mL) was added TFA (3.0 mL, 38.9 mmol) and allowed to stir at RT for16 h. The reaction mixture was concentrated and slowly added saturatedaq. solution of NaHCO₃ and extracted with chloroform. The organic layerwas washed with water, brine, dried over sodium sulfate and concentratedunder reduced pressure to afford Intermediate 309F (0.08 g, 35%) as abrown solid. ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.89 (s, 1H), 8.05 (d,J=1.51 Hz, 1H), 7.85 (d, J=1.00 Hz, 1H), 7.01-7.32 (m, 2H), 3.93-4.10(m, 4H), 3.14 (d, J=5.02 Hz, 2H), 2.64 (br. s., 1H).

Compound 309:2-(7-Chlorobenzo[d]oxazol-5-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 309F (0.035 g, 0.110 mmol) in THF(3.0 mL) was added TEA (0.015 mL, 0.110 mmol) followed by4-isocyanatobenzonitrile (0.019 g, 0.132 mmol) and the resultingsolution was allowed to stir at RT for 2 h. The reaction mixture wasdiluted with ethyl acetate, washed with water and brine. The organiclayer was dried over sodium sulfate, filtered and the filtrateconcentrated under reduced pressure. The crude product was purified bypreparative HPLC to afford Compound 309 (4.5 mg, 8%) as a pale yellowsolid. HPLC retention times 1.14 min. and 1.12 min. (Methods E and Lrespectively). MS(ES): m/z=462 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm9.41 (s, 1H), 8.92 (s, 1H), 8.04 (d, J=1.51 Hz, 1H), 7.84 (d, J=1.51 Hz,1H), 7.61-7.76 (m, 4H), 7.11-7.45 (m, 2H), 4.94 (s, 2H), 4.28 (t, J=5.27Hz, 2H), 4.02 (t, J=5.27 Hz, 2H).

The Compound shown in Table 21 has been prepared similar to Compound 309by coupling of Intermediate 309F with in-situ generated isocyanates fromrespective aniline.

TABLE 21 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min) Methods 310

2-(7-Chlorobenzo[d] oxazol-5-yl)-N⁵-(4- cyano-3-methylphenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide 476 1.27 E

Intermediate 311A: 5-Bromo-7-chloro-2-methylbenzo[d]oxazole

To a stirred solution of 2-amino-4-bromo-6-chlorophenol (1.0 g, 4.50mmol) in triethyl orthoacetate (0.829 mL, 4.50 mmol) was heated to 140°C. and stirred for 3 h. The reaction mixture was diluted with EtOAc (25mL), washed with water and brine. The organic layer was dried oversodium sulfate, filtered and the filtrate concentrated under reducedpressure. The crude compound was purified by silica gel chromatography(120 g REDISEP® column, eluting with a gradient from 0 to 5% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford the Intermediate 311A (0.85 g, 77%) as a brown solid. MS(ES):m/z=246 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.93 (d, J=1.89 Hz, 1H),7.74 (s, 1H), 2.67 (s, 3H).

Intermediate 311B:7-Chloro-2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazole

Intermediate 311B was synthesized from Intermediate 311A using asynthetic sequence analogous to the preparation of Intermediate 309D.MS(ES): m/z=212 [M−82)]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 7.72 (d,J=7.03 Hz, 2H), 2.04 (s, 3H), 1.31-1.38 (m, 12H).

Intermediate 311C: tert-Butyl3-carbamoyl-2-(7-chloro-2-methylbenzo[d]oxazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 311C was synthesized from Intermediates 311B and 156C usinga synthetic sequence analogous to the preparation of Intermediate 309E.MS(ES): m/z=432 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.87 (d, J=1.51Hz, 1H), 7.72 (d, J=1.00 Hz, 1H), 7.04-7.40 (m, 2H), 4.76 (s, 2H), 4.18(t, J=5.27 Hz, 2H), 3.85 (t, J 5.52 Hz, 2H), 2.68 (s, 3H), 1.46 (s, 9H).

Intermediate 311D:2-(7-Chloro-2-methylbenzo[d]oxazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate 311D was synthesized from Intermediate 311C using asynthetic sequence analogous to the preparation of Intermediate 309F.MS(ES): m/z=332 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.89 (d, J=1.13Hz, 1H) 7.74 (s, 1H), 6.95-7.30 (m, 2H), 3.95-4.09 (m, 4H), 3.13 (t,J=5.10 Hz, 2H), 2.62 (s, 3H).

Compound 311:2-(7-Chloro-2-methylbenzo[d]oxazol-5-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 311D (0.03 g, 0.090 mmol) in DMSO (1.0 mL)was added 4-isocyanatobenzonitrile (0.016 g, 0.109 mmol) and theresulting solution was heated to 80° C. and stirred for 2 h. Thereaction mixture was diluted with EtOAc (10 mL), washed with water andbrine. The organic layer was dried over sodium sulfate, filtered and thefiltrate concentrated under reduced pressure. The crude compound waspurified by preparative HPLC to afford the Compound 311 (9.2 mg, 21%) asan off-white solid. HPLC retention times 8.08 min. and 7.98 min.(Methods A and B respectively). MS(ES): m/z=476 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 9.41 (s, 1H), 7.90 (s, 1H), 7.66-7.77 (m, 5H), 7.09-7.45(m, 2H), 4.93 (s, 2H), 4.27 (t, J=5.27 Hz, 2H), 4.02 (t, J=5.27 Hz, 2H)2.5 (s, 3H).

The Compounds shown in Table 22 have been prepared similar to Compound311 by coupling of Intermediate 311D with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 22 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min) Methods 312

2-(7-Chloro-2-methylbenzo [d]oxazol-5-yl)-N⁵-(3-chloro-4-cyanophenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 511 9.23 8.61 A B 313

2-(7-Chloro-2-methylbenzo [d]oxazol-5-yl)-N⁵-(4-cyano-3-methylphenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 490 1.34 1.32 E L 314

2-(7-Chloro-2-methylbenzo [d]oxazol-5-yl)-N⁵-(4-cyano-3-fluorophenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 494 8.56 8.61 M B

Intermediate 315A: 5-Bromo-3-chloro-2-fluorobenzaldehyde

To a solution 4-bromo-2-chloro-1-fluorobenzene (5.000 g, 23.87 mmol) inTHF (50 mL) was added LDA (17.90 mL, 35.8 mmol, 1M in THF) dropwise at−78° C. and the reaction mixture was stirred at same temperature for 45min. DMF (2.218 mL, 28.6 mmol) was added and reaction mixture wasallowed to warm to RT and stirred for 3 h. The reaction mixture wasquenched with saturated NH₄Cl solution and extracted with EtOAc (3×75mL). The combined organic layer was washed with brine, dried overNa₂SO₄, filtered and concentrated. The crude product was purified bysilica gel chromatography (40 g REDISEP® column, eluting with a gradientfrom 0 to 20% EtOAc in petroleum ether). Fractions containing theproduct were combined and evaporated to afford Intermediate 315A (3.5 g,70%) as a yellow color solid. ¹H NMR (300 MHz, DMSO-d₆) δ ppm 10.10 (d,J=0.8 Hz, 1H), 8.26 (dd, J=6.4, 2.6 Hz, 1H), 7.94 (dd, J=5.5, 2.5 Hz,1H).

Intermediate 315B: 5-Bromo-7-chloro-1H-indazole

To a solution of Intermediate 315A (3.00 g, 12.63 mmol) in DMSO (30 mL)was added hydrazine hydrate (1.2 mL, 25.5 mmol) and the resultingsolution was heated to 110° C. and stirred for 12 h. The reactionmixture was cooled to 0° C., diluted with ice-cold water and the solidformed was filtered, dried under vacuum to afford the Intermediate 315B(1.5 g, 55%) as a white color solid. MS(ES): m/z=231 [M+H]⁺; ¹H NMR (300MHz, DMSO-d₆) δ ppm 13.80 (br. s., 1H), 8.19 (s, 1H), 8.02 (d, J=1.5 Hz,1H), 7.65 (d, J=1.5 Hz, 1H).

Intermediate 315C:7-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

To a solution of Intermediate 315B (0.8 g, 3.46 mmol) andbis(pinacolato)diboron (1.053 g, 4.15 mmol) in DMF (8 mL) was added KOAc(1.018 g, 10.37 mmol) and the reaction mixture was degasified with N₂for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.169 g, 0.207 mmol) was added and theresulting reaction mixture was heated to 110° C. and stirred for 12 h.The reaction mixture was diluted EtOAc, washed with water, brine, driedover Na₂SO₄, filtered and the filtrate concentrated to affordIntermediate 315C (0.7 g, 65%) as a brown color liquid. The crudeproduct was taken for Suzuki coupling without purification. MS(ES):m/z=279 [M+H]⁺.

Intermediate 315D: tert-Butyl3-carbamoyl-2-(7-chloro-1H-indazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 156C (500 mg, 1.275 mmol) and Intermediate315C (462 mg, 1.657 mmol) in DMF (5 mL) and H₂O (0.5 mL) was addedNa₂CO₃ (405 mg, 3.82 mmol) and the reaction mixture was purged with N₂gas for 10 min. Pd(PPh₃)₄(73.7 mg, 0.064 mmol) was added and theresulting reaction mixture was heated to 100° C. and stirred for 12 h.The reaction mixture was diluted with water (50 mL) and extracted withEtOAc (3×25 mL). The combined organic layer was washed with brine, driedover Na₂SO₄, filtered and the filtrate concentrated. The crude productwas purified by silica gel chromatography (40 g REDISEP® column, elutingwith a gradient from 0 to 5% MeOH in Chloroform). Fractions containingthe product were combined and evaporated to afford Intermediate 315D(0.3 g, 55%) as a yellow color solid. MS(ES): m/z=417 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 13.66 (s, 1H), 8.26 (d, J=1.5 Hz, 1H), 8.03 (s,1H), 7.71 (d, J=1.0 Hz, 1H), 7.26 (br. s., 1H), 7.02 (br. s., 1H), 4.76(s, 2H), 4.17 (t, J=5.3 Hz, 2H), 3.86 (t, J=5.3 Hz, 2H), 1.42 (s, 9H).

Intermediate 315E:2-(7-Chloro-1H-indazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate 315E was synthesized from Intermediate 315D using asynthetic sequence analogous to the preparation of Intermediate 309F.MS(ES): m/z=317 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 13.6 (s, 1H),8.28 (d, J=1.5 Hz, 1H), 8.29-8.20 (s, 1H), 7.82 (d, J=1.5 Hz, 1H), 7.17(br. s., 1H), 6.96 (br. s., 1H), 4.65 (s, 2H), 4.02 (t, J=5.5 Hz, 2H),3.73 (t, J=5.5 Hz, 1H), 2.26 (br. s., 1H).

Compound 315:2-(7-Chloro-1H-indazol-5-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 315 was synthesized from Intermediate 315E using a syntheticsequence analogous to the preparation of Compound 309. HPLC retentiontimes 7.266 min. and 6.71 min. (Methods A and B respectively). MS(ES):m/z=461.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.41 (s, 1H), 8.28 (s,1H), 8.05 (d, J=1.00 Hz, 1H), 7.65-7.76 (m, 5H), 7.33 (br. s., 1H), 7.06(br. s., 1H), 4.93 (s, 2H), 4.26 (t, J=5.27 Hz, 2H), 4.02 (t, J=5.27 Hz,2H).

The Compounds shown in Table 23 have been prepared similar to Compound315 by coupling of Intermediate 315E with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 23 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods316

2-(7-Chloro-1H- indazol-5-yl)-N⁵-(4- cyano-3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 478.8 1.13 1.13 EL 317

2-(7-Chloro-1H- indazol-5- yl)-N⁵-(4-cyano-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 474.8 1.11 1.11 EL

Intermediate 318A: 5-Bromo-7-chloro-1-methyl-1H-indazole

To a solution of Intermediate 315B (1.500 g, 6.48 mmol) and K₂CO₃ (4.48g, 32.4 mmol) in DMSO (15 mL) was added MeI (0.486 mL, 7.78 mmol) at RTand the resulting reaction mixture was stirred at RT for 2 h. Thereaction mixture was diluted with ice-cold water and the solid formedwas filtered through a Buchner funnel, dried under vacuum. The crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 0 to 5% EtOAc in petroleum ether).Fractions containing the products were combined and evaporated to affordthe Intermediate 318A (0.85 g, 50%) as a yellow solid. ¹H NMR (400 MHz,DMSO-d₆) δ ppm 8.12 (s, 1H), 8.01 (d, J=1.5 Hz, 1H), 7.64 (d, J=1.5 Hz,1H), 4.31 (s, 3H).

Intermediate 318B:7-Chloro-1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

To a solution of Intermediate 318A (0.85 g, 3.46 mmol) andbis(pinacolato)diboron (1.055 g, 4.15 mmol) in DMF (8 mL) was added KOAc(1.018 g, 10.37 mmol) and the reaction mixture was degasified with N₂for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.113 g, 0.138 mmol) was added and theresulting reaction mixture was heated to 110° C. and stirred for 12 h.The reaction mixture was diluted EtOAc, washed with water, brine, driedover Na₂SO₄, filtered and the filtrate concentrated to affordIntermediate 318B (0.75 g 75%) as a brown color liquid. The crudeproduct was taken for Suzuki coupling without purification. MS(ES):m/z=293 [M+H]⁺.

Intermediate 318C: tert-Butyl3-carbamoyl-2-(7-chloro-1-methyl-1H-indazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 318C was synthesized from Intermediate 318B using asynthetic sequence analogous to the preparation of Intermediate 315D.MS(ES): m/z=431.6 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.21 (s, 1H),8.04 (d, J=1.5 Hz, 1H), 7.73 (d, J=1.5 Hz, 1H), 7.34 (s, 1H), 7.10 (s,1H), 4.76 (s, 2H), 4.34 (s, 3H), 4.18 (t, J=5.5 Hz, 2H), 3.86 (t, J=5.5Hz, 2H), 1.46 (s, 9H).

Intermediate 318D:2-(7-Chloro-1-methyl-1H-indazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate 318D was synthesized from Intermediate 318C using asynthetic sequence analogous to the preparation of Intermediate 309F.MS(ES): m/z=331 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.19 (s, 1H),8.06 (d, J=1.0 Hz, 1H), 7.76 (d, J=1.0 Hz, 1H), 7.21 (br. s., 1H), 7.04(br. s., 1H), 4.33 (s, 3H), 4.07-3.99 (m, 4H), 3.16-3.12 (m, 2H), 2.65(t, J=5.8 Hz, 1H).

Compound 318:2-(7-Chloro-1-methyl-1H-indazol-5-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 318 was synthesized from Intermediate 318D using a syntheticsequence analogous to the preparation of Compound 309. HPLC retentiontime 15.26 min. and 15.76 min. (Methods C and D respectively). MS(ES):m/z=475[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.40 (s, 1H), 8.21 (s,1H), 8.06 (s, 1H), 7.64-7.77 (m, 5H), 7.34 (br. s., 1H), 7.10 (br. s.,1H), 4.93 (s, 2H), 4.34 (s, 3H), 4.26 (t, J=5.27 Hz, 2H), 3.80 (t,J=5.27 Hz, 2H).

The Compound shown in Table 24 has been prepared similar to Compound 318by coupling of Intermediate 318D with in-situ generated from respectiveaniline.

TABLE 24 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min) Methods 319

2-(7-Chloro-1-methyl-1H- indazol-5-yl)-N⁵-(3-chloro- 4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 509.6 1.44 1.45 EL

Intermediate 320A: 5-Bromo-7-chloro-3-methyl-1H-indazole

To a solution of 1-(5-bromo-3-chloro-2-fluorophenyl)ethanone (4.0 g,15.91 mmol) in DMSO (40 mL) was added hydrazine monohydrate (0.998 mL,31.8 mmol) and the reaction mixture was allowed to stir at 80° C. for 12h. The reaction mixture was cooled to 0° C., diluted with ice-cold waterand the solid was filtered through a Buchner funnel, and dried undervacuum to afford Intermediate 320A (3.1 g, 75%) as a white solid. ¹H NMR(300 MHz, chloroform-d) ppm δ 10.19 (br. s., 1H), 7.75 (d, J=1.5 Hz,1H), 7.52-7.44 (m, 1H), 2.58 (s, 3H).

Intermediate 320B:7-Chloro-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

To a solution of Intermediate 320A (1.0 g, 4.07 mmol),bis(pinacolato)diboron (1.345 g, 5.30 mmol) in DMF (10 mL) was addedKOAc (1.199 g, 12.22 mmol) and the reaction mixture was purged with N₂for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.200 g, 0.244 mmol) was added and thereaction mixture was heated to 100° C. and stirred for 12 h. Thereaction mixture was diluted with water (50 mL) and extracted with ethylacetate (2×50 mL). The combined organic layer was washed with brine,dried over Na₂SO₄, filtered and the filtrate concentrated to affordIntermediate 320B (0.8 g, 67%) as brown color gummy liquid. The crudeproduct was taken to Suzuki coupling without purification. MS(ES):m/z=293 [M+H]⁺.

Intermediate 320C: tert-Butyl3-carbamoyl-2-(7-chloro-3-methyl-1H-indazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 320C was synthesized from Intermediate 320B using asynthetic sequence analogous to the preparation of Intermediate 315D.MS(ES): m/z=431 [M+H]⁺; ¹H NMR (300 MHz, chloroform-d) δ ppm 10.25 (br.s., 1H), 7.83 (d, J=1.1 Hz, 1H), 7.61 (d, J=1.5 Hz, 1H), 7.29 (br. s.,1H), 6.97 (br. s., 1H), 5.01 (s, 2H), 4.25 (t, J=5.3 Hz, 2H), 3.98 (t,J=5.3 Hz, 2H), 1.54 (s, 9H).

Intermediate 320D:2-(7-Chloro-3-methyl-1H-indazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate 320D was synthesized from Intermediate 320C using asynthetic sequence analogous to the preparation of Intermediate 309F.MS(ES): m/z=331 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) ppm 13.22 (br. s.,1H), 7.98 (d, J=1.0 Hz, 1H), 7.70 (d, J=1.0 Hz, 1H), 7.20 (br. s., 1H),6.95 (br. s., 1H), 4.08-3.94 (m, 4H), 3.13 (d, J=4.5 Hz, 2H), 2.69-2.59(m, 1H), 2.4 (s, 3H).

Compound 320:2-(7-Chloro-3-methyl-1H-indazol-5-yl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 320 was synthesized from Intermediate 320D using a syntheticsequence analogous to the preparation of Intermediate 292. HPLCretention time 1.21 min and 1.27 min (Methods E and L respectively).MS(ES): m/z=475.2 [M+H]⁺. ¹H NMR (400 MHz, DMSO-d₆) δ ppm 13.24 (s, 1H),9.41 (s, 1H), 7.98 (d, J=1.0 Hz, 1H), 7.77-7.63 (m, 5H), 7.36 (br. s.,1H), 7.03 (br. s., 1H), 4.92 (s, 2H), 4.25 (t, J=5.0 Hz, 2H), 4.01 (t,J=5.3 Hz, 2H), 2.4 (s, 3H).

The Compound shown in Table 25 has been prepared similar to Compound 320by reaction of Intermediate 320D with phenylcarbamate of respectiveaniline.

TABLE 25 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min) Methods 321

2-(7-Chloro-3-methyl- 1H-indazol-5-yl)-N⁵- (3-chloro-4-cyanophenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide509.2 1.39 1.43 E L

Intermediate 322A: 5-Bromo-7-chloro-1,3-dimethyl-1H-indazole

To a solution of Intermediate 320A (2.00 g, 8.15 mmol) and K₂CO₃ (3.38g, 24.44 mmol) in DMSO (20 mL) was added methyl iodide (1.528 mL, 24.44mmol) at 0° C. and the reaction mixture was stirred at RT for 12 h. Thereaction mixture was diluted with ice-cold water, solid formed wasfiltered through a Buchner funnel and dried under vacuum. The crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 25% EtOAc in hexanes to isolate majorisomer). Fractions containing the product were combined and evaporatedto afford Intermediate 322A (1.1 g, 47%) as an off-white solid. ¹H NMR(300 MHz, chloroform-d) δ ppm 7.67 (d, J=1.5 Hz, 1H), 7.44 (d, J=1.9 Hz,1H), 4.31 (s, 3H), 2.51 (s, 3H).

Intermediate 322B:7-Chloro-1,3-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

To a solution of Intermediate 322A (1.2 g, 4.62 mmol),bis(pinacolato)diboron (1.53 g, 6.01 mmol) in DMF (12 mL) was added KOAc(1.361 g, 13.87 mmol) and the reaction mixture was purged with N₂ gasfor 0 min. PdCl₂(dppf)-CH₂Cl₂ (0.227 g, 0.277 mmol) was added and thereaction mixture was heated to 110° C. and stirred for 12 h. Thereaction mixture was cooled to RT, diluted with EtOAc, and filteredthrough CELITE®. The filtrate was washed with water, brine, dried overNa₂SO₄, filtered and concentrated to afford Intermediate 322B (1.0 g,70%) as brown liquid MS(ES): m/z=307 [M+H]⁺.

Intermediate 322C: tert-Butyl3-carbamoyl-2-(7-chloro-1,3-dimethyl-1H-indazol-5-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 322C was synthesized from Intermediate 322B using asynthetic sequence analogous to the preparation of Intermediate 315D.MS(ES): m/z=445 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 8.32 (s, 1H),7.70 (d, J=1.1 Hz, 1H), 7.02 (br. s., 1H), 6.89 (br. s., 1H), 4.25 (s,3H), 4.16 (t, J=6 Hz, 2H), 3.85 (t, J=6 Hz, 2H), 2.47 (s, 3H).

Intermediate 322D:2-(7-Chloro-1,3-dimethyl-1H-indazol-5-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,HCl

Intermediate 322D was synthesized from Intermediate 322C using asynthetic sequence analogous to the preparation of Intermediate 304E.MS(ES): m/z=335 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 7.97 (d, J=1.5Hz, 1H), 7.68 (d, J=1.5 Hz, 1H), 7.40 (br. s., 1H), 7.06 (br. s., 1H),4.55 (s., 2H), 4.42 (t, J=5.5 Hz, 2H), 4.25 (s, 3H), 3.67 (m, 3H), 2.46(s, 3H).

Compound 322:2-(7-Chloro-1,3-dimethyl-1H-indazol-5-yl)-N-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 322 was synthesized from Intermediate 322D using a syntheticsequence analogous to the preparation of Compound 292. MS(ES): m/z=489.3[M+H]⁺; HPLC retention time 1.37 min and 1.42 min (Methods E and Lrespectively). ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.42 (s, 1H), 7.99 (d,J=1.0 Hz, 1H), 7.77-7.64 (m, 5H), 7.39 (br. s., 1H), 7.08 (br. s., 1H),4.93 (s, 2H), 4.28-4.26 (t, J=5.3 Hz, 2H), 4.24 (s, 3H), 4.02 (t, J=5.3Hz, 2H), 2.48 (s, 3H).

Intermediate 323A: 6-Bromo-4-fluoro-1H-indazole

To a solution of 4-bromo-2,6-difluorobenzaldehyde (0.1 g, 0.452 mmol) inDMSO (0.5 mL) was added hydrazine hydrate (0.023 g, 0.452 mmol) and theresultant solution was heated to 100° C. and stirred for 18 h. Thereaction mixture cooled to RT and diluted with water. The solidseparated was filtered, washed with water and dried under vacuum toafford Intermediate 323A (0.065 g, 60%) as a white solid. MS(ES):m/z=214.9 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 13.53 (br. s., 1H),8.22 (s, 1H), 7.65 (s, 1H), 7.17 (d, J=9.4 Hz, 1H).

Intermediate 323B:4-Fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

Intermediate 323B was synthesized from Intermediate 323A using asynthetic sequence analogous to the preparation of Intermediate 297A.MS(ES): m/z=181.0 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 13.53 (br. s.,1H), 8.22 (s, 1H), 7.69 (s, 1H), 6.99 (d, J=10.6 Hz, 1H), 1.32 (s, 12H).

Intermediate 323C: tert-Butyl3-carbamoyl-2-(4-fluoro-1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 323C was synthesized from Intermediate 323B using asynthetic sequence analogous to the preparation of Intermediate 315DMS(ES): m/z=401.2 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 12.86 (br. s.,1H), 8.19 (s, 1H), 7.73 (s, 1H), 7.36 (br. s., 1H), 7.20-7.16 (m, 2H),4.75 (s, 2H), 4.18 (t, J=5.1 Hz, 2H), 3.90-3.77 (m, 2H), 1.54 (s, 9H).

Intermediate 323D:2-(4-Fluoro-1H-indazol-6-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA

Intermediate 323D was synthesized from Intermediate 323C using asynthetic sequence analogous to the preparation of Intermediate 297C.MS(ES): m/z=301.0 [M+H]⁺.

Compound 323:N⁵-(3-Chloro-4-cyanophenyl)-2-(4-fluoro-1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 323D (0.05 g, 0.121 mmol) in DMSO(1 mL) was added phenyl (3-chloro-4-cyanophenyl)carbamate (0.033 g,0.121 mmol), TEA (0.050 mL, 0.362 mmol) and the resulting reactionmixture was allowed to stir at RT for 12 h. The reaction mixture wasdiluted with water and the solid separated was filtered and dried. Thecrude product was purified by preparative HPLC to afford Compound 323 (2mg, 4%). The retention times are 1.271 min. and 1.265 min. (Methods Eand L respectively): MS(ES): m/z=478.8 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆)δ ppm 13.49 (s, 1H), 9.59 (s, 1H), 8.20 (s, 1H), 7.92 (d, J=2.0 Hz, 1H),7.86 (d, J=8.5 Hz, 2H), 7.75 (s, 1H), 7.64-7.60 (m, 1H), 7.21 (d, J=11.5Hz, 2H), 4.93 (s, 2H), 4.28 (s, 2H), 4.02 (s, 2H).

The Compounds shown in Table 26 have been prepared similar to Compound323 by reaction of Intermediate 323D with phenylcarbamates of respectiveanilines.

TABLE 26 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods324

N⁵-(4-Cyano-3-fluorophenyl)- 2-(4-fluoro-1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 462.9 1.2701.154 E L 325

N⁵-(4-Cyano-3- methylphenyl)-2-(4-fluoro- 1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 459.0 1.258 1.134E L

Intermediates 326A and 326B: 6-Bromo-4-fluoro-1-methyl-1H-indazole(326A), and 6-Bromo-4-fluoro-2-methyl-2H-indazole (326B)

To a solution of Intermediate 323A (0.25 g, 1.163 mmol) in DMSO (3 mL)was added K₂CO₃ (0.321 g, 2.325 mmol) followed by MeI (0.087 mL, 1.395mmol) and the resulting reaction mixture was stirred at RT for 3 h. Thereaction mixture was quenched with water and extracted with EtOAc (2×50mL). The combined organic layer was washed with brine, dried over Na₂SO₄and concentrated under reduced pressure. The crude compound was purifiedby silica gel chromatography (12 g REDISEP® column, eluting with agradient from 0-10% EtOAc in hexanes). Fractions containing thedifferent products were combined and evaporated to afford Intermediate326A (0.15 g, 54%) and Intermediate 326B (0.075 g, 27%). ¹H NMR (300MHz, DMSO-d₆, 326A) δ ppm 8.19 (s, 1H), 7.89 (s, 1H), 7.19 (dd, J=9.6,0.9 Hz, 1H), 4.05 (s, 3H). ¹H NMR (400 MHz, DMSO-d₆, 326B) δ ppm 8.61(s, 1H), 7.74 (d, J=1.0 Hz, 1H), 7.05 (dd, J=1.3, 9.8 Hz, 1H), 4.18 (s,3H).

Intermediate 326 C:4-Fluoro-1-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole

Intermediate 326C was synthesized from Intermediate 326A using asynthetic sequence analogous to the preparation of Intermediate 297A.MS(ES): m/z=277.1 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.20 (s, 1H),7.80 (s, 1H), 7.04 (d, J=10.5 Hz, 1H), 4.13 (s, 3H), 1.34 (s, 12H).

Intermediate 326D: tert-Butyl3-carbamoyl-2-(4-fluoro-1-methyl-1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 326D was synthesized from Intermediate 326C using asynthetic sequence analogous to the preparation of Intermediate 315D.MS(ES): m/z=415.2 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 8.09 (s,1H), 7.43 (s, 1H), 7.04 (d, J=10.5 Hz, 1H), 4.99 (s, 2H), 4.28-4.19 (m,2H), 4.10 (s, 3H), 4.01-3.90 (m, 2H), 1.52 (s, 9H).

Intermediate 326E:2-(4-Fluoro-1-methyl-1H-indazol-6-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA

Intermediate 326E was synthesized from Intermediate 326D using asynthetic sequence analogous to the preparation of Intermediate 297C.MS(ES): m/z=315.1[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.46 (br. s.,1H), 8.21 (s, 1H), 7.79 (s, 1H), 7.34 (br. s., 1H), 7.21-7.14 (m, 1H),7.05 (br. s., 1H), 4.60 (s, 2H), 4.41 (t, J=5.8 Hz, 2H), 4.10 (s, 3H),3.73 (t, J=5.8 Hz, 2H).

Compound 326:N⁵-(4-Cyanophenyl)-2-(4-fluoro-1-methyl-1H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a stirred solution of Intermediate 326E (0.04 g, 0.093 mmol) and4-isocyanatobenzonitrile (0.013 g, 0.093 mmol) in THF (1 mL) was addedTEA (0.039 mL, 0.280 mmol) and the resultant solution was heated to 70°C. and stirred for 3 h. The reaction mixture was diluted with EtOAc,washed with water and brine. The organic layer was dried over anhydrousNa₂SO₄, filtered and the filtrate concentrated. The crude product waspurified by preparative HPLC to afford Compound 326 (0.011 g, 26%) as anoff-white solid. MS(ES): m/z=459.2 [M+H]⁺; HPLC retention times are1.768 min. and 1.777 min. (Methods E and L respectively). ¹H NMR (400MHz, DMSO-d₆) δ ppm 9.41 (s, 1H), 8.19 (s, 1H), 7.81 (s, 1H), 7.75-7.66(m, 4H), 7.39 (br. s., 1H), 7.21 (dd, J=1.0, 11.5 Hz, 1H), 7.11 (br. s.,1H), 4.95 (s, 2H), 4.28 (t, J=5.5 Hz, 2H), 4.09 (s, 3H), 4.04-3.98 (m,2H).

The Compound shown in Table 27 has been prepared similar to Compound 326by coupling of Intermediate 326E with in-situ generated isocyanates fromrespective aniline.

TABLE 27 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods327

N⁵-(4-Cyano-3- methylphenyl)- 2-(4-fluoro-1- methyl-1H-indazol-6-yl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide 473.0 1.882 1.870 E L

Intermediate 328A:4-Fluoro-2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-indazole

Intermediate 328A was synthesized from Intermediate 326B using asynthetic sequence analogous to the preparation of Intermediate 297A.MS(ES): m/z=277.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.56 (s, 1H),7.79 (s, 1H), 6.88 (d, J=10.5 Hz, 1H), 4.22 (s, 3H), 1.32 (s, 12H).

Intermediate 328B: tert-Butyl3-carbamoyl-2-(4-fluoro-2-methyl-2H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate 328B was synthesized from Intermediate 328A using asynthetic sequence analogous to the preparation of Intermediate 315D.MS(ES): m/z=415.2 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 8.06 (s,1H), 7.72 (s, 1H), 6.88 (d, J=10.5 Hz, 1H), 5.02-4.97 (m, 2H), 4.27 (s,2H), 4.25-4.20 (m, 3H), 4.00-3.89 (m, 2H), 1.52 (s, 9H).

Intermediate 328C:2-(4-Fluoro-2-methyl-2H-indazol-6-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA

Intermediate 328C was synthesized from Intermediate 328B using asynthetic sequence analogous to the preparation of Intermediate 297C.MS(ES): m/z=315.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.52-9.32 (m,1H), 8.58 (s, 1H), 7.74 (s, 1H), 7.45 (s, 1H), 7.15-6.97 (m, 2H), 4.58(s, 2H), 4.40 (s, 2H), 4.21 (s, 3H), 3.72 (s, 2H).

Intermediate 328:N⁵-(3-Chloro-4-cyanophenyl)-2-(4-fluoro-2-methyl-2H-indazol-6-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 328 was synthesized from Intermediate 328C using a syntheticsequence analogous to the preparation of Compound 326. HPLC retentiontimes are 1.653 min. and 1.653 min. (Methods H and I respectively).MS(ES): m/z=459.0 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.41 (s, 1H),8.55 (s, 1H), 7.78-7.66 (m, 5H), 7.38 (br. s., 1H), 7.10 (dd, J=1.0,11.5 Hz, 2H), 4.92 (s, 2H), 4.27 (t, J=5.3 Hz, 2H), 4.20 (s, 3H), 4.02(t, J=5.3 Hz, 2H).

Intermediate 329A: Diethyl1-(2-((tert-butoxycarbonyl)amino)propyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred suspension of PPh₃ (12.41 g, 47.3 mmol) in THF (100 mL) wasadded DIAD (9.20 mL, 47.3 mmol) at −10° C. and allowed to stir at 0° C.for 0.5 h. Intermediate 104C (8.0 g, 23.66 mmol) was added as a solutionin THF (10 mL) at 0° C. and stirred at RT for 45 min. The reactionmixture was cooled again to 0° C. and tert-butyl(1-hydroxypropan-2-yl)carbamate (5.39 g, 30.8 mmol) was added as asolution in THF (10 mL) and the mixture was stirred at RT for 16 h. Thereaction mixture was diluted with ethyl acetate (100 mL), washed withwater and brine. The organic layer was dried over Na₂SO₄, filtered andthe filtrate concentrated under reduced pressure. The crude compound waspurified by silica gel chromatography (40 g REDISEP® column, elutingwith 15% EtOAc in hexane). Fractions containing the product werecombined and evaporated to afford the Intermediate 329A as a brownliquid (7.0 g) contaminated with impurities arising from the couplingreagents. MS(ES): m/z=496 [M+H]⁺. The crude intermediate was taken tothe next step without further purification.

Intermediate 329B: Ethyl2-iodo-6-methyl-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 329A (7.0 g, 14.13 mmol) in1,4-dioxane (10 mL) was added 4 M HCl in dioxane (25 mL, 100 mmol) andthe solution was stirred at RT for 2 h. The reaction mixture wasconcentrated and the residue was diluted with EtOAc (20 mL). The EtOAcsolution was washed successively with water, a saturated aq. solution ofNaHCO₃, and brine. The organic layer was dried over Na₂SO₄, filtered andconcentrated under reduced pressure. The residue obtained was heated ina ROTAVAPOR® at 60° C. for 5 h. The solid product was washed with etherto afford Intermediate 329B (4.0 g, 87%). MS(ES): m/z=350 [M+H]⁺; ¹H NMR(300 MHz, DMSO-d₆) δ ppm 8.49 (s, 1H), 4.27-4.49 (m, 1H), 4.11-4.26 (m,2H), 4.03 (d, J=11.71 Hz, 2H), 1.06-1.39 (m, 6H).

Intermediate 329C: Ethyl2-iodo-6-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 329B (4.0 g, 11.46 mmol) in THF (40 mL)was added BH₃.THF (40.1 mL, 80 mmol, 1M in THF) and the reaction mixturewas stirred at 70° C. for 16 h. Ethanol (10 mL) was added and thereaction mixture was heated to reflux for 1 h. The reaction mixture wasconcentrated to afford Intermediate 329C (1.9 g, 40% yield) as a palebrown liquid. MS(ES): m/z=336 [M+H]⁺. The crude compound was taken tothe next step without further purification

Intermediate 329D: 5-tert-Butyl3-ethyl2-iodo-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a stirred solution of Intermediate 329C (0.81 g, 2.417 mmol) in DCM(10 mL) was added TEA (0.404 mL, 2.90 mmol) followed by Boc₂O (0.617 mL,2.66 mmol) and the resulting solution was stirred at RT for 16 h. It wasthen diluted with DCM (10 mL) washed with water and brine. The crudecompound was purified by silica gel chromatography (12 g REDISEP®column, eluting with 1% MeOH in CHCl₃). Fractions containing the productwere combined and evaporated to afford Intermediate 329D as a colorlesssemi-solid (0.7 g, 67%). MS(ES): m/z=435 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 5.07 (d, J=18.57 Hz, 1H), 4.69 (br. s., 1H), 4.39 (d,J=18.57 Hz, 1H), 4.06-4.28 (m, 4H), 1.45 (s, 9H), 1.23-1.34 (m, 3H),1.08 (d, J=7.03 Hz, 3H).

Intermediate 329E:5-(tert-Butoxycarbonyl)-2-iodo-6-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a stirred solution of Intermediate 329D (0.85 g, 1.953 mmol) in EtOH(2.0 mL) was added a solution of NaOH (0.391 g, 9.76 mmol) in water (1.0mL) and the resulting solution was stirred at RT for 16 h. The reactionmixture was concentrated and the residue was acidified by the additionof a 1N aq. solution of HCl (5 mL) which was allowed to stir for 10 min.The generated precipitate was filtered and dried to afford Intermediate329E as a white solid (0.65 g, 82%). MS(ES): m/z=408 [M+H]⁺; ¹H NMR (300MHz, DMSO-d₆) δ ppm 5.05 (d, J=18.89 Hz, 1H), 4.67 (br. s., 1H), 4.36(d, J=18.13 Hz, 1H), 4.13-4.25 (m, 1H), 3.93-4.13 (m, 2H), 1.44 (s, 9H),1.08 (t, J=6.99 Hz, 3H).

Intermediate 329F: tert-Butyl3-carbamoyl-2-iodo-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 329E (0.65 g, 1.596 mmol) in DMF(3.0 mL) was added NH₄Cl (0.427 g, 7.98 mmol), HATU (1.214 g, 3.19 mmol)and DIPEA (0.836 mL, 4.79 mmol) and the resulting solution was allowedto stir at RT for 3 h. It was diluted with ethyl acetate (10 mL), washedwith water, brine, dried over Na₂SO₄, filtered and the filtrateconcentrated. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with 2% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordIntermediate 329F as a colorless liquid (0.38 g, 59%). MS(ES): m/z=407[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 6.79-7.56 (m, 2H), 5.01 (d,J=18.51 Hz, 1H), 4.66 (br. s., 1H), 4.39 (d, J=18.13 Hz, 1H), 3.96-4.20(m, 2H), 1.44 (s, 9H), 1.07 (d, J=6.80 Hz, 3H).

Intermediate 329G: tert-Butyl3-carbamoyl-2-iodo-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred suspension of Intermediate 329F (0.32 g, 0.788 mmol) in1,4-dioxane (8.0 mL) was added (3-chloro-4-fluorophenyl)boronic acid(0.179 g, 1.024 mmol), K₃PO₄ (1.292 g, 2.58 mmol) and the contents ofthe flask were purged with N₂ for 10 min. PdCl₂(dppf)-CH₂Cl₂ (0.042 g,0.052 mmol) was then added and the reaction mixture was stirred at 80°C. for 6 h. The reaction mixture was cooled to RT; diluted with ethylacetate (10 mL), washed with water, dried over Na₂SO₄, filtered and thefiltrate concentrated under reduced pressure. The crude compound waspurified by silica gel chromatography (12 g REDISEP® column, elutingwith 2% MeOH in CHCl₃). Fractions containing the product were combinedand evaporated to afford Intermediate 329G as a pale yellow solid (0.27g, 84%). MS(ES): m/z=408 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm7.85-7.92 (m, 1H), 7.71 (ddd, J=8.69, 4.91, 2.27 Hz, 1H), 7.46 (d,J=17.75 Hz, 1H), 7.24-7.38 (m, 2H), 4.99 (d, J=17.75 Hz, 1H), 4.72 (br.s., 1H), 4.44 (d, J=17.75 Hz, 1H), 4.08-4.28 (m, 2H), 1.46 (s, 9H), 1.15(s, 3H).

Intermediate 329H:2-(3-Chloro-4-fluorophenyl)-6-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA

To a stirred solution of Intermediate 329G (0.09 g, 0.220 mmol) in DCM(3.0 mL) was added TFA (0.017 mL, 0.220 mmol) and the resulting solutionwas stirred at RT for 2 h. It was then concentrated and the residue wastriturated with hexane to afford Intermediate 329H as a white solid (0.1g). MS(ES): m/z=308 (M+H]+; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.80-7.85(m, 1H), 7.64-7.71 (m, 1H), 7.40-7.55 (m, 2H), 7.13-7.27 (m, 1H), 4.71(d, J=16.06 Hz, 1H) 4.53 (dd, J=13.55, 4.02 Hz, 2H), 3.90-4.11 (m, 2H),1.40 (d, J=6.53 Hz, 3H).

Compounds 329 and 330:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 329 and 330 were synthesized from Intermediate 329H using asynthetic sequence analogous to the preparation of Compound 297.Individual isomers were separated by chiral SFC purification (Column:CHIRALCEL® OD-H (4.6×250) mm, 5μ, Flow rate 4 ml/min; Isocratic: 40%,Mobile Phase B. Temperature: Ambient at 264 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in methanol), Back pressure: 98 bar,Diluents: methanol).

Compound 329: (Elapsed time 2.52 min); MS(ES): m/z=453 [M+H]⁺. HPLCretention times 9.24 min. and 8.72 min (Methods A and B respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.33 (s, 1H), 7.84-7.98 (m, 1H),7.63-7.76 (m, 5H), 7.25-7.50 (m, 3H), 5.27 (s, 1H), 4.86-5.00 (m, 1H),4.60 (s, 1H), 4.08-4.32 (m, 2H), 1.23 (s, 3H).

Compound 330: (Elapsed time 3.42 min); MS(ES): m/z=453 [M+H]⁺. HPLCretention times 9.25 min. and 8.74 min (Methods A and B respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.33 (s,1H), 7.84-7.98 (m, 1H), 7.63-7.76 (m, 5H), 7.25-7.50 (m, 3H), 5.27 (s,1H), 4.86-5.00 (m, 1H), 4.60 (s, 1H), 4.08-4.32 (m, 2H), 1.23 (s, 3H).

Compounds 331 and 332:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 331 and 332 were synthesized from Intermediate 329F using asynthetic sequence analogous to the preparation of Compound 330 usingSuzuki coupling with 3,4-dichloroboronic acid followed by deprotectionof N-Boc group and urea formation with 4-isocyanatobenzonitrile.Individual isomers were separated by chiral SFC purification (Column:CHIRALPAK® IC (250×4.6) mm, 5μ, Flow rate 3 ml/min; Isocratic: 40%Mobile Phase B. Temperature: Ambient at 264 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in IPA), Back pressure: 100 bar,Diluents: isopropanol).

Compound 331: (Elapsed time 3.94 min); MS(ES): m/z=435 [M+H]⁺. HPLCretention times 8.66 min. and 9.26 min (Methods B and M respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.33 (s, 1H), 7.66-7.79 (m, 6H),7.41-7.49 (m, 3H), 7.33 (br. s., 1H), 5.25 (d, J=17.57 Hz, 1H),4.91-4.99 (m, 1H), 4.57 (d, J=17.57 Hz, 1H), 4.18-4.33 (m, 2H),1.19-1.27 (m, 3H).

Compound 332: (Elapsed time 11.35 min); MS(ES): m/z=435 [M+H]⁺. HPLCretention times 8.66 min. and 9.26 min (Methods B and M respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.33 (s, 1H), 7.66-7.79 (m, 6H),7.41-7.49 (m, 3H), 7.33 (br. s., 1H), 5.25 (d, J=17.57 Hz, 1H),4.91-4.99 (m, 1H), 4.57 (d, J=17.57 Hz, 1H), 4.18-4.33 (m, 2H),1.19-1.27 (m, 3H).

Compounds 333 and 334:N⁵-(4-Cyanophenyl)-2-(3,4-dichlorophenyl)-6-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 333 and 334 were synthesized from Intermediate 329F using asynthetic sequence analogous to the preparation of Compound 330 usingSuzuki coupling with 3,4-dichloroboronic acid followed by deprotectionof N-Boc group and urea formation with 4-isocyanatobenzonitrile. Theindividual isomers were separated by chiral SFC separation (Column:CHIRALCEL® OJH (250×4.6) mm, 5 t, Flow rate 3 ml/min; Isocratic: 30%Mobile Phase B. Temperature: Ambient at 263 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in methanol), Back pressure: 100 bar,Diluents: methanol).

Compound 333: (Elapsed time 3.53 min); MS(ES): m/z=469 [M+H]⁺. HPLCretention times 9.27 min. and 10.05 min (Methods B and A respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.32 (s, 1H), 7.95 (d, J=2.01 Hz, 1H),7.64-7.76 (m, 6H), 7.42 (br. s., 2H), 5.24 (d, J=17.57 Hz, 1H),4.88-5.00 (m, 1H), 4.57 (d, J=17.57 Hz, 1H), 4.12-4.32 (m, 2H),1.18-1.24 (m, 3H).

Compound 334: (Elapsed time 4.15 min); MS(ES): m/z=469 [M+H]⁺. HPLCretention times 9.27 min. and 10.05-min (Methods B and A respectively).¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.32 (s, 1H), 7.95 (d, J=2.01 Hz, 1H),7.64-7.76 (m, 6H), 7.42 (br. s., 2H), 5.24 (d, J=17.57 Hz, 1H),4.88-5.00 (m, 1H), 4.57 (d, J=17.57 Hz, 1H), 4.12-4.32 (m, 2H),1.18-1.24 (m, 3H).

Intermediate 335A: Diethyl1-(2-((tert-butoxycarbonyl)amino)-3,3,3-trifluoropropyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of PPh₃ (3.10 g, 11.83 mmol) in THF (50 mL) wasadded DIAD (2.300 mL, 11.83 mmol) at 0° C. and the mixture stirred for15 min prior to the addition of Intermediate 104C (2 g, 5.92 mmol) inTHF (10 mL) which was allowed to stir for 15 min. A solution oftert-butyl (1,1,1-trifluoro-3-hydroxypropan-2-yl)carbamate (1.763 g,7.69 mmol) in THF (10 mL) was then added and the solution was stirred atRT for 16 h. The reaction mixture was poured into water and extractedwith EtOAc (2×100 mL). The combined organic layer was washed with brine,dried over anhydrous Na₂SO₄, filtered and the filtrate concentratedunder reduced pressure. The crude compound was purified by silica gelchromatography (24 g REDISEP® column, eluting with 10% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate 335A (3 g, 88%) as an oil. ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.94-7.84 (m, 1H), 4.87-4.80 (m, 1H), 4.79-4.67 (m, 1H),4.40-4.31 (m, 3H), 4.30-4.21 (m, 2H), 1.33 (s, 9H), 1.30-1.25 (m, 6H).

Intermediate 335B: Ethyl2-iodo-4-oxo-6-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

Intermediate 335A (3 g, 5.46 mmol) was dissolved in 4 M HCl in1,4-dioxane (50 mL) and stirred at RT for 2 h. The volatiles wereremoved under reduced pressure, and the crude residue was dissolved inEtOAc (250 mL) and washed with an aq. solution of NaHCO₃, then driedover Na₂SO₄ and concentrated under reduced pressure. The crude wasdissolved in EtOH (25 mL) and stirred at 60° C. for 16 h. Ethanol wasremoved under reduced pressure and the resulting residue was stirredwith hexanes for 15 min. The triturated solid was filtered and dried toafford Intermediate 335B (0.96 g, 41.4%) as an off-white solid. MS(ES):−m/z=404.0 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.34 (d, J=4.5 Hz,1H), 4.84-4.73 (m, 2H), 4.71-4.60 (m, 1H), 4.34-4.20 (m, 2H), 1.32-1.23(m, 3H).

Intermediate 335C: Ethyl2-iodo-6-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 335B (0.1 g, 0.248 mmol) in THF (1mL) was added BH₃.DMS complex (0.236 mL, 2.481 mmol) under nitrogen andthe reaction mixture was stirred at RT for 16 h. The reaction mixturewas then cooled to 0° C., quenched with methanol (1 mL) and stirred for15 min at RT. The volatiles were removed under reduced pressure and thecrude compound was purified by silica gel chromatography (12 g REDISEP®column, eluting with 25% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate 335C as awhite solid (0.025 g, 25%). MS(ES): −m/z=390.4 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 4.37-4.27 (m, 2H), 4.22 (q, J=7.4 Hz, 3H), 4.12-4.00 (m,3H), 1.33-1.26 (m, 3H).

Intermediate 335D: 5-tert-Butyl 3-ethyl2-iodo-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a stirred solution of Intermediate 335C (0.025 g, 0.064 mmol) in DCM(5 mL) was added TEA (0.027 mL, 0.193 mmol) and DMAP (0.785 mg, 6.42μmol), followed by Boc₂O (0.018 mL, 0.077 mmol) and the resultingsolution was allowed to stir at RT for 12 h. The reaction mixture wasthen diluted with DCM (20 mL), washed with water, dried over anhydrousNa₂SO₄, filtered and the filtrate concentrated under reduced pressure.The crude compound was purified by silica gel chromatography (12 gREDISEP® column, eluting with 20% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate 335D as a white solid (0.025 g, 76%). MS(ES): m/z=490.4[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 5.55-5.38 (m, 1H), 5.18-5.08 (m,1H), 4.54 (br. s., 3H), 4.24 (d, J=7.0 Hz, 2H), 1.48 (s, 9H), 1.31 (t,J=7.3 Hz, 3H).

Intermediate 335E:5-(tert-Butoxycarbonyl)-2-iodo-6-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a solution of Intermediate 335D (0.22 g, 0.450 mmol) in ethanol (2mL) and water (2 mL) was added NaOH (0.036 g, 0.899 mmol) and thesolution was stirred at RT for 16 h. The reaction mixture wasconcentrated under reduced pressure and the pH of the crude product wasadjusted to 2 with an aqueous solution of 1.5N HCl and extracted withEtOAc (2×20 mL). The combined organic layer was dried over anhydrousNa₂SO₄, filtered and the filtrate concentrated under reduced pressure toafford Intermediate 335E as a white solid (0.12 g, 55%). MS(ES):m/z=462.4 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 12.4 (br, s., 1H),5.55-5.38 (m, 1H), 5.18-5.08 (m, 1H), 4.54 (m, 3H), 1.48 (s, 9H).

Intermediate 335F: tert-Butyl3-carbamoyl-2-iodo-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 335E (0.12 g, 0.260 mmol) in DMF (1 mL)was added NH₄Cl (0.028 g, 0.520 mmol), HATU (0.099 g, 0.260 mmol) andDIPEA (0.136 mL, 0.781 mmol) under nitrogen and the resulting solutionwas stirred at RT for 16 h. The reaction mixture was poured into waterand the aqueous layer was extracted with EtOAc (2×25 mL). The combinedorganic layers were dried over anhydrous Na₂SO₄ and concentrated underreduced pressure. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with 3% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordIntermediate 335F as a white solid (0.07 g, 50%). MS(ES): m/z=460.9[M+H]⁺.

Intermediate 335G: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate 335F (0.35 g, 0.761 mmol) and(3-chloro-4-fluorophenyl)boronic acid (0.215 g, 0.837 mmol) in DMF (2mL) was added a solution of Na₂CO₃ (0.242 g, 2.282 mmol) in water (1 mL)and the reaction mixture was purged with nitrogen for 5 min.Pd(PPh₃)₄(0.044 g, 0.038 mmol) was then added and the reaction mixturewas stirred at 100° C. for 18 h. The reaction mixture was cooled to RTand extracted with EtOAc (2×50 mL). The combined organic layer was driedover anhydrous Na₂SO₄, filtered and the filtrate concentrated underreduced pressure. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with 5% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordIntermediate 335G as a white solid (0.25 g, 68%). MS(ES): m/z=464.5[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 7.92-7.82 (m, 1H), 7.73-7.67 (m,1H), 7.65-7.52 (m, 1H), 7.51-7.44 (m, 1H), 7.41-7.21 (m, 2H), 5.17-5.05(m, 1H), 4.65-4.48 (m, 3H), 1.50 (s, 9H).

Intermediate 335H:2-(3-Chloro-4-fluorophenyl)-6-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide.TFA

To a solution of Intermediate 335G (0.3 g, 0.648 mmol) in DCM (5 mL) wasadded TFA (0.499 mL, 6.48 mmol) under nitrogen and the resultingsolution was stirred at RT for 2 h. The volatiles were removed underreduced pressure and the crude product was triturated with diethyl etherto afford Intermediate 335H as a white solid (0.21 g, 54%). MS(ES):m/z=363.4 [M+H]⁺;

Compounds 335 and 336:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 335 and 336 were synthesized from Intermediate 335H using asynthetic sequence analogous to the preparation of Compound 297. Theindividual isomers were separated by preparative chiral SFC purification(Column: CHIRALPAK® IC (250×4.6) mm, 54, Flow rate 3 ml/min; Isocratic:30% Mobile Phase B. Temperature: Ambient at 267 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in methanol), Back pressure: 100 bar,Diluents: methanol).

Compound 335 (19 mg, 24%); (Elapsed time 2.65 min); MS(ES): m/z=507.0[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.85-7.90 (m, 1H),7.76 (br. s., 2H), 7.64-7.73 (m, 3H), 7.41-7.52 (m, 2H), 7.31 (br. s.,1H), 5.80 (br. s., 1H), 5.35 (d, J=17.07 Hz, 1H), 4.78 (d, J=18.57 Hz,1H), 4.62 (br. s., 2H).

Compound 336 (23 mg, 29%); (Elapsed time 5.43 min); MS(ES): m/z=507.0[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.85-7.90 (m, 1H),7.76 (br. s., 2H), 7.64-7.73 (m, 3H), 7.41-7.52 (m, 2H), 7.31 (br. s.,1H), 5.80 (br. s., 1H), 5.35 (d, J=17.07 Hz, 1H), 4.78 (d, J=18.57 Hz,1H), 4.62 (br. s., 2H).

Compounds 337 and 338:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 337 and 338 were synthesized from Intermediate 335F using asynthetic sequence analogous to the preparation of Compound 335 usingSuzuki coupling with 3-chloroboronic acid followed by deprotection ofN-Boc group and urea formation with 4-isocyanatobenzonitrile. Theindividual isomers were separated by preparative chiral SFC (Column:CHIRALPAK® IC (250×4.6) mm, 5 t, Flow rate 3 ml/min; Isocratic: 40%Mobile Phase B. Temperature: Ambient at 267 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in methanol), Back pressure: 100 bar,Diluents: methanol.

Compound 337: (Elapsed time 1.65 min); MS(ES): m/z=489.5 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.82-7.64 (m, 6H), 7.49-7.43 (m,3H), 7.30 (br. s., 1H), 5.80 (d, J=9.0 Hz, 1H), 5.33 (d, J=17.1 Hz, 1H),4.79 (d, J=17.1 Hz, 1H), 4.63 (br. s., 2H).

Compound 338: (Elapsed time 5.11 min): MS(ES): m/z=489.5 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.82-7.64 (m, 6H), 7.49-7.43 (m,3H), 7.30 (br. s., 1H), 5.80 (d, J=9.0 Hz, 1H), 5.33 (d, J=17.1 Hz, 1H),4.79 (d, J=17.1 Hz, 1H), 4.63 (br. s., 2H).

Compounds 339 and 340:N⁵-(4-Cyanophenyl)-2-(3,4-dichlorophenyl)-6-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 339 and 340 were synthesized from Intermediate 335F using asynthetic sequence analogous to the preparation of Compound 335 usingSuzuki coupling with 3,4-dichloroboronic acid followed by deprotectionof N-Boc group and urea formation with 4-isocyanatobenzonitrile. Theindividual isomers were separated by preparative chiral SFC (Column:CHIRALPAK® IC (250×4.6) mm, 5 t, Flow rate 3 ml/min; Isocratic: 40%;Mobile Phase B. Temperature: Ambient at 267 nm (Mobile Phase A: CO₂,Mobile Phase B: 0.3% diethylamine in methanol), Back pressure: 100 bar,Diluents: methanol.

Compound 339: (Elapsed time 1.79 min); MS(ES): m/z=523.5 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.93 (s, 1H), 7.83-7.75 (m, 2H),7.73-7.66 (m, 4H), 7.48 (br. s., 1H), 7.38 (br. s., 1H), 5.82 (br. s.,1H), 5.34 (d, J=17.1 Hz, 1H), 4.79 (d, J=17.1 Hz, 1H), 4.64 (br. s.,2H).

Compound 340: (Elapsed time 3.38 min); MS(ES): m/z=523.5 [M+H]⁺; ¹H NMR(400 MHz, DMSO-d₆) δ ppm 9.58 (s, 1H), 7.93 (s, 1H), 7.83-7.75 (m, 2H),7.73-7.66 (m, 4H), 7.48 (br. s., 1H), 7.38 (br. s., 1H), 5.82 (br. s.,1H), 5.34 (d, J=17.1 Hz, 1H), 4.79 (d, J=17.1 Hz, 1H), 4.64 (br. s.,2H).

Intermediate 341A: tert-Butyl (1-cyclopropyl-2-hydroxyethyl)carbamate

To a stirred solution of tert-butyl(1-cyclopropyl-2-hydroxyethyl)carbamate (6.5 g, 64.3 mmol) in DCM (10.0mL) was added TEA (10.75 mL, 77 mmol), followed by Boc₂O (16.41 mL, 70.7mmol) and the resulting solution was stirred at RT for 16 h. Thereaction mixture was concentrated and the residue was extracted with DCM(50 mL). The organic layer was washed with water, brine, dried overNa₂SO₄, filtered and the filtrate concentrated under reduced pressure.The crude compound was purified by silica gel chromatography (120 gREDISEP® column, eluting with 20% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate 341A as a colorless liquid (6.2 g, 48%). ¹H NMR (400 MHz,DMSO-d₆) δ ppm 6.47 (d, J=7.03 Hz, 1H), 4.45-4.58 (m, 1H), 3.38-3.45 (m,2H), 2.98 (br. s., 1H), 1.31-1.47 (m, 9H), 0.76-0.89 (m, 1H), 0.34-0.45(m, 1H), 0.18-0.32 (m, 2H), 0.07-0.15 (m, 1H).

Intermediate 341B: Diethyl1-(2-((tert-butoxycarbonyl)amino)-2-cyclopropylethyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of PPh₃ (15.52 g, 59.2 mmol) in THF (40.0 mL)cooled to −10° C. was added DIAD (11.50 mL, 59.2 mmol) and the resultingsolution was stirred at 0° C. for 0.5 h. Intermediate 104C (10 g, 29.6mmol) was added as a solution in THF (10 mL) at 0° C. and stirred at RTfor 45 min. A solution of Intermediate 341A (7.74 g, 38.5 mmol) in THF(10 mL) at was added at 0° C. and the reaction mixture was allowed tostir at RT for 16 h. The reaction mixture was diluted with EtOAc (50 mL)washed with water and brine. The organic layer was dried over Na₂SO₄ andconcentrated under reduced pressure. The crude compound was purified bysilica gel chromatography (120 g REDISEP® column, eluting with 15% EtOAcin hexanes). Fractions containing the product were combined andevaporated to afford Intermediate 341B along with impurities arisingfrom the coupling reagents (8.01 g, 84%); the crude material was takento the next step without further purification. MS(ES): m/z=522 [M+H]⁺.

Intermediate 341C: Ethyl6-cyclopropyl-2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 341B (8.0 g, 15.34 mmol) in1,4-dioxane (10.0 mL) was added 4 M HCl in dioxane (40.0 mL, 160 mmol)and the resulting solution was stirred at RT for 2 h. The reactionmixture was concentrated and diluted with EtOAc (50 mL). The organiclayer was washed successively with water, a saturated aq. solution ofNaHCO₃, and brine, then dried over Na₂SO₄, filtered and the filtrateconcentrated under reduced pressure. The residue obtained was heated ina ROTAVAPOR® at 60° C. for 5 h. The solid product was triturated withdiethyl ether to afford Intermediate 341C as an off-white solid (1.6 g,28%). MS(ES): m/z=376 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 8.67 (d,J=2.27 Hz, 1H), 4.47 (dd, J=13.22, 4.53 Hz, 1H), 4.17-4.33 (m, 3H), 3.15(d, J=9.07 Hz, 1H), 1.28 (s, 3H), 0.90 (d, J=8.69 Hz, 1H), 0.40-0.54 (m,2H), 0.20-0.37 (m, 2H).

Intermediate 341D: Ethyl6-cyclopropyl-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 341C (1.3 g, 3.47 mmol) in THF (10 mL) wasadded BH₃.THF (6.06 mL, 12.13 mmol, 1 M in THF) and the resultingsolution was stirred at 60° C. for 16 h. The reaction mixture wasquenched with ethanol (10 mL) and heated to reflux for 1 h. The reactionmixture was concentrated under reduced pressure to afford crudeIntermediate 341D (1.2 g), which was taken to the next step withoutfurther purification. MS(ES): m/z=362 [M+H]⁺.

Intermediate 341E: 5-tert-Butyl 3-ethyl6-cyclopropyl-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a solution of Intermediate 341D (1.2 g, 3.32 mmol) in DCM (10.0 mL)was added TEA (0.556 mL, 3.99 mmol), followed by Boc₂O (0.849 mL, 3.65mmol) and the solution was stirred at RT for 16 h. The reaction mixturewas diluted with DCM (15 mL) and the organic layer was washed withwater, brine, dried over Na₂SO₄, filtered and the filtrate concentrated.The crude compound was purified by silica gel chromatography (24 gREDISEP® column, eluting with 25% EtOAc in hexane). Fractions containingthe product were combined and evaporated to afford the Intermediate 341Eas a colorless semi-solid (0.85 g, 55%). MS(ES): m/z=462 [M+H]⁺; ¹H NMR(300 MHz, DMSO-d₆) δ ppm 5.13 (d, J=18.89 Hz, 1H), 4.48 (d, J=18.89 Hz,1H), 4.13-4.31 (m, 4H), 3.84 (br. s., 1H), 1.38-1.47 (m, 9H), 1.31 (s,3H), 0.84-0.96 (m, 1H), 0.46 (d, J=8.31 Hz, 2H), 0.38 (d, J=4.91 Hz,2H).

Intermediate 341F:5-(tert-Butoxycarbonyl)-6-cyclopropyl-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a stirred solution of Intermediate 341E (0.85 g, 1.843 mmol) inethanol (2 mL) and water (1 mL) was added NaOH (0.369 g, 9.21 mmol) andthe resulting solution was stirred at RT for 10 h. The reaction mixturewas diluted with DCM (10 mL) and washed successively with an aqueoussolution of 1N HCl, water and brine. The organic layer was then driedover Na₂SO₄, filtered and the filtrate concentrated under reducedpressure to afford the Intermediate 341F as an off-white solid (0.75 g,94%). MS(ES): m/z=434 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ 8 ppm 12.6(br. s., 1H), 5.11 (d, J=18.89 Hz, 1H), 4.45 (d, J=18.51 Hz, 1H),4.16-4.25 (m, 2H), 3.82 (br. s., 1H), 1.43 (s, 9H), 0.82-0.96 (m, 1H),0.47 (d, J=7.93 Hz, 2H), 0.35 (dd, J=6.80, 4.91 Hz, 2H).

Intermediate 341G: tert-Butyl3-carbamoyl-6-cyclopropyl-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 341F (0.75 g, 1.731 mmol) in DMF(4.0 mL) was added NH₄Cl (0.463 g, 8.66 mmol), HATU (1.316 g, 3.46 mmol)and DIPEA (1.512 mL, 8.66 mmol) and the resulting solution was stirredat RT for 16 h. The reaction mixture was diluted with ethyl acetate (10mL), washed with water and brine. The organic layer was dried overNa₂SO₄, filtered and the filtrate concentrated under reduced pressure.The crude compound was purified by silica gel chromatography (24 gREDISEP® column, eluting with 65% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate 341G as a colorless liquid (0.51 g, 68%). MS(ES): m/z=433[M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 6.83-7.50 (m, 2H), 5.07 (d,J=18.13 Hz, 1H), 4.50 (d, J=18.51 Hz, 1H), 4.20 (d, J=2.27 Hz, 2H), 3.84(br. s., 1H), 1.43 (s, 9H), 0.89 (d, J=9.82 Hz, 1H), 0.47 (d, J=7.93 Hz,2H), 0.27-0.40 (m, 2H).

Intermediate 341H: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-6-cyclopropyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred suspension of Intermediate 341G (0.47 g, 1.087 mmol) in1,4-dioxane (5 mL) was added K₃PO₄ (1.631 mL, 3.26 mmol),(3-chloro-4-fluorophenyl)boronic acid (0.246 g, 1.414 mmol) and thereaction mixture was purged with nitrogen for 10 min. PdCl₂(dppf)-CH₂Cl₂(0.053 g, 0.065 mmol) was then added and the reaction mixture was heatedto 80° C. and stirred for 6 h. The reaction mixture was filtered throughCELITE® and the filtrate was diluted with ethyl acetate (10 mL), andwashed with water and brine. The organic layer was dried over Na₂SO₄,filtered and the filtrate concentrated under reduced pressure. The crudecompound was purified by silica gel chromatography (12 g REDISEP®column, eluting with 2% MeOH in CHCl₃). Fractions containing the productwere combined and evaporated to afford Intermediate 341H as an off-whitesolid (0.4 g, 85%). MS(ES): m/z=435 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δppm 7.85-7.95 (m, 1H), 7.66-7.77 (m, 1H), 7.47 (t, J=9.07 Hz, 1H),7.20-7.39 (m, 2H), 5.05 (d, J=17.37 Hz, 1H), 4.55 (d, J=17.37 Hz, 1H),4.24 (br. s., 2H), 3.89 (br. s., 1H), 1.45 (s, 9H), 0.87-1.05 (m, 1H),0.31-0.55 (m, 4H).

Intermediate 3411:2-(3-Chloro-4-fluorophenyl)-6-cyclopropyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a stirred solution of Intermediate 341H (0.43 g, 0.989 mmol) in DCM(8.0 mL) was added TFA (4.0 mL, 51.9 mmol) and the resulting solutionwas stirred at RT for 2 h. The reaction mixture was concentrated and theresidue was extracted with DCM (10 mL), and washed successively withwater, a saturated aq. NaHCO₃ solution and brine.

The organic layer was dried over Na₂SO₄, filtered and the filtrateconcentrated under reduced pressure to afford Intermediate 3411 as anoff-white solid (0.3 g, 67%). MS(ES): m/z=335 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 7.80-7.91 (m, 1H), 7.64-7.70 (m, 1H), 7.35-7.50 (m, 1H),7.02-7.29 (m, 2H), 4.12-4.25 (m, 2H), 3.93 (d, J=16.56 Hz, 1H),3.68-3.81 (m, 2H), 2.40 (br. s., 1H), 0.82-0.98 (m, 1H), 0.48 (d, J=8.03Hz, 2H), 0.37 (d, J=5.02 Hz, 2H).

Compounds 341 and 342:2-(3-Chloro-4-fluorophenyl)-6-cyclopropyl-N⁵-(3,3-difluoro-1-methylcyclobutyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds 341 and 342 were synthesized from Intermediate 3411 using asynthetic sequence analogous to the preparation of Compound 297. Theindividual isomers were separated by preparative chiral SFC purification(Column: CHIRALPAK® IC (4.6×250) mm, 5μ, Flow rate: 4 ml/min; Isocratic:35%; Mobile Phase B. Temperature: Ambient at 267 nm (Mobile Phase A:CO₂, Mobile Phase B: 0.2% diethylamine in methanol).

Compound 341: Elapsed at 5.26 min; HPLC retention times 10.33 min. and9.39 min. (Methods M and B). MS(ES): m/z=479 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 9.31 (s, 1H), 7.91 (dd, J=7.28, 2.26 Hz, 1H), 7.69-7.76(m, 3H), 7.61-7.67 (m, 2H), 7.33-7.51 (m, 3H), 5.26 (d, J=17.57 Hz, 1H),4.73 (d, J=17.57 Hz, 1H), 4.31 (d, J=2.51 Hz, 2H), 4.11 (d, J=9.54 Hz,1H), 1.04-1.15 (m, 1H), 0.35-0.61 (m, 4H).

Compound 342: Elapsed at 9.02 min; HPLC retention times 10.33 min. and9.39 min. (Methods M and B). MS(ES): m/z=479 [M+H]⁺; ¹H NMR (400 MHz,DMSO-d₆) δ ppm 9.31 (s, 1H), 7.91 (dd, J=7.28, 2.26 Hz, 1H), 7.69-7.76(m, 3H), 7.61-7.67 (m, 2H), 7.33-7.51 (m, 3H), 5.26 (d, J=17.57 Hz, 1H),4.73 (d, J=17.57 Hz, 1H), 4.31 (d, J=2.51 Hz, 2H), 4.11 (d, J=9.54 Hz,1H), 1.04-1.15 (m, 1H), 0.35-0.61 (m, 4H).

Intermediate 343A: Diethyl1-((1-((tert-Butoxycarbonyl)amino)cyclopropyl)methyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of PPh₃ (15.52 g, 59.2 mmol) in THF (80.0 mL)cooled to 0° C. was added DIAD (11.50 mL, 59.2 mmol) and the resultingsolution was stirred at 0° C. for 0.5 h. Intermediate 104C (8.00 g,23.66 mmol) was added as a solution in THF (20 mL) at 0° C. and stirredat RT for 45 min. A solution of tert-butyl (1-(hydroxymethyl)cyclopropyl)carbamate (5.32 g, 28.4 mmol) in THF (10 mL) was added at 0°C. and the reaction mixture was allowed to stir at RT for 16 h. Thereaction mixture was diluted with water (250 mL) and extracted withEtOAc (2×200 mL). The combined organic layer was washed with brine,dried over Na₂SO₄, filtered and concentrated. The crude product waspurified by silica gel chromatography (220 g REDISEP® column, elutingwith 20% EtOAc in hexane). Fractions containing the product werecombined and evaporated to afford Intermediate 343A as a pale yellowliquid (10 g, 85%). MS(ES): m/z=508 [M+H]⁺; ¹H NMR (400 MHz,chloroform-d) δ ppm 4.45 (s, 2H), 4.41-4.25 (m, 4H), 1.46 (s, 9H),1.40-1.30 (m, 4H), 1.24 (s, 3H), 1.03-0.94 (m, 2H), 0.90-0.78 (m, 2H).

Intermediate 343B: Ethyl2′-iodo-4′-oxo-5′,7′-dihydro-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′-carboxylate

To a stirred solution of Intermediate 343A (2.1 g, 4.14 mmol) in1,4-dioxane (10.0 mL) was added 4 M HCl in dioxane (10 mL, 41 mmol) andthe resulting solution was stirred at RT for 1 h. The reaction mixturewas concentrated and diluted with EtOAc (50 mL). The organic layer waswashed successively with water, a saturated aq. solution of NaHCO₃, andbrine, then dried over Na₂SO₄, filtered and the filtrate concentratedunder reduced pressure. The residue obtained was heated in a ROTAVAPOR®at 60° C. for 5 h. The solid product was triturated with diethyl etherto afford Intermediate 343B as a pale yellow solid (1.1 g, 60%). MS(ES):m/z=362 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 6.93 (s, 1H), 4.41(q, J=7.0 Hz, 2H), 4.26 (s, 2H), 1.41 (t, J=7.0 Hz, 3H), 1.11-0.85 (m,4H).

Intermediate 343C: Ethyl2′-iodo-5′,7′-dihydro-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′-carboxylate

To a solution of Intermediate 343B (1.1 g, 3.05 mmol) in THF (10 mL) wasadded BH₃.DMS (0.578 mL, 6.09 mmol, 2M) and the resulting solution wasstirred at 40 OC for 18 h. The reaction mixture was cooled to RT,quenched with ethanol (10 mL) and heated to reflux for 1 h. The reactionmixture was concentrated under reduced pressure. The crude product waspurified by silica gel chromatography (24 g REDISEP® column, elutingwith 2% MeOH in CHCl₃). Fractions containing the product were combinedand evaporated to afford Intermediate 343C (0.7 g, 66%) as a gummysolid. MS(ES): m/z=348 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 4.41(q, J=7.0 Hz, 2H), 3.92 (s, 1H), 1.38 (m, 4H), 1.36 (t, J=7.0 Hz, 3H),0.90 (m, 2H), 0.68 (m, 2H).

Intermediate 343D: 5′-tert-Butyl 3′-ethyl2′-iodo-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′,5′(7′H)-dicarboxylate

To a solution of Intermediate 343C (0.70 g, 2.016 mmol) in DCM (10.0 mL)was added TEA (0.281 mL, 2.016 mmol), followed by Boc₂O (0.702 mL, 3.02mmol) and the solution was stirred at RT for 16 h. The reaction mixturewas diluted with DCM (25 mL) and the organic layer was washed withwater, brine, dried over Na₂SO₄, filtered and the filtrate concentrated.The crude product was purified by silica gel chromatography (24 gREDISEP® column, eluting with 30% EtOAc in petroleum ether). Fractionscontaining the product were combined and evaporated to affordIntermediate 343D as an off-white solid (0.6 g, 67%). MS(ES): m/z=448[M+H]⁺; ¹H NMR (400 MHz, chloroform-d) 6 ppm 4.88 (br. s., 2H), 4.33 (q,J=7.0 Hz, 2H), 4.03 (br. s., 2H), 1.48 (m, 9H), 1.41 (t, J=7.0 Hz, 3H),1.17 (m, 2H), 0.97-0.85 (m, 2H).

Intermediate 343E:5′-(tert-Butoxycarbonyl)-2′-iodo-5′,7′-dihydro-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′-carboxylicacid

To a stirred solution of Intermediate 343D (0.500 g, 1.118 mmol) inethanol (10 mL) and water (1 mL) was added NaOH (0.369 g, 9.21 mmol) andthe resulting solution was stirred at RT for 12 h. The volatiles wereremoved under reduced pressure and the residue was acidified with anaqueous solution of 1.5 N HCl. The solid product separated was filteredthrough a Buchner funnel and dried under vacuum to afford Intermediate343E as a white solid (0.43 g, 90%). MS(ES): m/z=420 [M+H]⁺; ¹H NMR (400MHz, chloroform-d) δ ppm 6.19 (br. s., 1H), 4.92 (br. s., 2H), 4.06 (br.s., 2H), 1.48 (s, 9H), 1.19 (br. s., 2H), 1.01-0.83 (m, 2H).

Intermediate 343F: tert-Butyl3′-carbamoyl-2′-iodo-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-5′(7′H)-carboxylate

To a stirred solution of Intermediate 343E (0.43 g, 1.026 mmol) in DMF(4 mL) was added NH₄Cl (0.274 g, 5.13 mmol), HATU (0.780 g, 2.051 mmol)and DIPEA (0.537 mL, 3.08 mmol) and the resulting solution was stirredat RT for 16 h. The reaction mixture was diluted with water (50 mL) andextracted with EtOAc (3×25 mL). The combined organic layer was washedwith brine, dried over Na₂SO₄, filtered and the filtrate concentrated.The residue was triturated with diethyl ether, filtered and dried toafford Intermediate 343F as an off-white solid (0.4 g, 89%). MS(ES):m/z=419 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 6.56 (br. s., 1H),5.54 (br. s., 1H), 4.96 (br. s., 2H), 4.04 (br. s., 2H), 1.44 (s, 9H),1.18 (m, 2H), 0.97-0.84 (m, 2H).

Intermediate 343G: tert-Butyl3′-carbamoyl-2′-(3-chloro-4-fluorophenyl)-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-5′(7′H)-carboxylate

To a stirred suspension of Intermediate 343F (0.400 g, 0.956 mmol) in1,4-dioxane (5 mL) was added K₃PO₄ (0.500 g, 2.80 mmol),(3-chloro-4-fluorophenyl) boronic acid (0.250 g, 1.435 mmol) and thereaction mixture was purged with nitrogen for 10 min. PdCl₂(dppf)-CH₂Cl₂(0.047 g, 0.057 mmol) was then added and the reaction mixture was heatedto 80° C. and stirred for 12 h. The reaction mixture was diluted withwater (25 mL) and extracted with EtOAc (3×25 mL). The combined organiclayers were washed with brine, dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude product was purified by silica gelchromatography (24 g REDISEP® column, eluting with 3% MeOH in CHCl₃)Fractions containing the product were combined and evaporated to affordIntermediate 343G as a pale yellow solid (0.29 g, 70%). MS(ES): m/z=421[M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 7.69 (dd, J=7.0, 2.3 Hz,1H), 7.50 (ddd, J=8.5, 4.6, 2.1 Hz, 1H), 7.33-7.15 (m, 1H), 5.34 (br.s., 2H), 4.97 (br. s., 2H), 4.05 (br. s., 2H), 1.44 (s, 9H), 1.22-1.24(m, 2H), 1.02-0.79 (m, 2H).

Intermediate 343H:2′-(3-Chloro-4-fluorophenyl)-5′,7′-dihydro-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′-carboxamide

To a solution of Intermediate 343G (0.29 g, 0.689 mmol) in DCM (5 mL)was added TFA (3 mL) and the resulting solution was stirred at RT for 2h. The volatiles were removed under reduced pressure. The residue wasbasified with a 10% aqueous solution of NaHCO₃ and extracted with EtOAc(3×20 mL). The combined organic layer was washed with brine, dried overNa₂SO₄, filtered and the filtrate concentrated to afford Intermediate343H as a yellow solid (0.2 g, 85%). MS(ES): m/z=321 [M+H]⁺; ¹H NMR (300MHz, chloroform-d) δ ppm 7.71 (dd, J=7.2, 2.3 Hz, 1H), 7.51 (ddd, J=8.3,4.5, 2.3 Hz, 1H), 7.33-7.11 (m, 1H), 5.33 (br. s., 2H), 4.40 (s, 2H),4.03 (s, 2H), 1.02-0.88 (m, 2H), 0.80-0.59 (m, 2H).

Compound 343:2′-(3-Chloro-4-fluorophenyl)-N⁵′-(4-cyanophenyl)-4′H-spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]-3′,5′(7′H)-dicarboxamide

Compound 343 was synthesized from Intermediate 343H using a syntheticsequence analogous to the preparation of Compound 297. HPLC retentiontimes 9.16 min. and 8.83 min. (Methods A and B). MS(ES): m/z=465 [M+H]⁺;¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.11 (s, 1H), 7.86 (dd, J=7.31, 2.16 Hz,1H), 7.66-7.73 (m, 5H), 7.45 (t, J=9 Hz, 1H), 7.35 (br.s, 1H), 7.23(br.s, 1H), 4.92 (br.s, 2H), 4.25 (br.s, 2H), 1.16 (s, 4H).

The Compounds shown in Table 28 have been prepared similar to Compound343 by coupling of Intermediate 343H with various readily availableisocyanates or in-situ generated from respective anilines.

TABLE 28 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods344

2′-(3-Chloro-4-fluorophenyl)- N⁵′-(4-cyano-3-methylphenyl)-4′H-spiro[cyclopropane-1,6′- pyrazolo[1,5-a]pyrazine]-3′,5′(7′H)-dicarboxamide 479.2  9.60  9.23 A B 345

2′-(3-Chloro-4-fluorophenyl)- N⁵′-(4-cyano-3-(trifluoromethyl)phenyl)-4′H- spiro[cyclopropane-1,6′-pyrazolo[1,5-a]pyrazine]- 3′,5′(7′H)-dicarboxamide 533.2 10.47  9.93 A B

Intermediate 346A: Diethyl1-((3-(tert-butoxycarbonyl)-2,2-dimethyloxazolidin-4-yl)methyl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a stirred solution of triphenylphosphine (5.84 g, 22.25 mmol) in THF(20 mL) was added DIAD (4.50 g 22.25 mmol) dropwise at 0° C. and theresulting solution was stirred for 15 min. Intermediate 104C (3.0 g,8.90 mmol) in THF (20 mL) was added slowly at 0° C. and stirred at roomtemperature for 45 min. Intermediate tert-butyl4-(hydroxymethyl)-2,2-dimethyloxazolidine-3-carboxylate (2.470 g, 10.68mmol) in THF (20 mL) was added at 0° C. and resulting solution wasstirred at room temperature overnight. The volatiles were removed underreduced pressure and the crude compound was purified by silica gelchromatography (40 g REDISEP® column, eluting with 10-13% ethyl acetatein hexanes). Fractions containing the product were combined andevaporated to afford Intermediate 346A (3.5 g, 58.5%) as a pale yellowoil. MS(ES): m/z=552 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 4.53-4.18(m, 6H), 3.96-3.82 (m, 2H), 1.50-1.21 (m, 21H).

Intermediate 346B: Ethyl6-(hydroxymethyl)-2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 346A (3.3 g, 5.99 mmol) in dioxane (10 mL)was added 4 M HCl in dioxane (5 mL, 5.99 mmol) and the resultingreaction mixture was stirred at RT for 3 h. The reaction mixture wasconcentrated and the crude product was basified with a 10% aqueoussolution of sodium bicarbonate and extracted with EtOAc (3×100 mL). Thecombined organic layer was dried over sodium sulfate, filtered andconcentrated slowly (2 to 3 h) using a rotary evaporator at 60° C. toobtain Intermediate 346B (1.6 g, 67.4%) as a white solid. MS(ES):m/z=366 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.43 (d, J=3.0 Hz, 1H),5.14 (t, J=5.5 Hz, 1H), 4.46-4.41 (m, 1H), 4.37-4.30 (m, 1H), 4.25 (q,J=7.0 Hz, 2H), 3.84-3.75 (m, 1H), 3.54-3.47 (m, 1H), 3.36 (s, 1H), 1.28(t, J=7.0 Hz, 3H).

Intermediate 346C: Ethyl6-(((tert-butyldimethylsilyl)oxy)methyl)-2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 346B (1.2 g, 3.29 mmol) in DCM (12 mL) wasadded imidazole (0.336 g, 4.93 mmol), TBDMS-Cl (0.644 g, 4.27 mmol),DMAP (0.028 g, 0.23 mmol) and the reaction mixture was stirred at RT for3 h. The reaction mixture was diluted with water and extracted with DCM(3×40 mL). The combined organic layer was washed with water, dried oversodium sulfate and concentrated. The crude product obtained was purifiedby silica gel chromatography (40 g REDISEP® column, eluting with 50%ethyl acetate in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate 346C (1.1 g, 69%),MS(ES): m/z=480.2 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.43 (d, J=4.0Hz, 1H), 4.52-4.45 (m, 1H), 4.35 (dd, J=4.0, 13.6 Hz, 1H), 4.27-4.18 (m,2H), 3.86-3.79 (m, 1H), 3.71 (dd, J=4.0, 10.5 Hz, 1H), 3.55 (dd, J=6.0,10.5 Hz, 1H), 1.27 (t, J=7.0 Hz, 3H), 0.81-0.75 (m, 9H), −0.02 (d, J=1.0Hz, 6H).

Intermediate 346D: Ethyl6-(((tert-butyldimethylsilyl)oxy)methyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 346C (1.2 g, 2.503 mmol) in THF (120 ml)was added neat borane dimethylsulfide complex (0.713 mL, 7.51 mmol)dropwise and the resulting solution was heated at 40 OC for 36 h. Thereaction mixture was cooled to room temperature and ethanol (10 mL) wasadded dropwise. The reaction mixture was stirred at 70° C. for 1 h andconcentrated to afford Intermediate 346D as a white semi-solid (1.23 g,95%), which was taken to the next step without further purification.MS(ES): m/z=466 [M+H]⁺.

Intermediate 346E: Ethyl6-(((tert-butyldimethylsilyl)oxy)methyl)-5-((4-cyanophenyl)carbamoyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate 346D (1.2 g, 2.58 mmol) in THF (12 ml) wasadded 4-isocyanatobenzonitrile (0.446 g, 3.09 mmol) and the solution wasstirred at room temperature overnight. The reaction mixture wasconcentrated and the crude product was purified by silica gelchromatography (40 g REDISEP® column, eluting with 16% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate 346E (0.6 g, 38%) as a white solid. MS(ES):m/z=610 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.32 (s, 1H), 7.75-7.63(m, 4H), 5.24 (d, J=18.6 Hz, 1H), 4.85-4.77 (m, 1H), 4.47 (d, J=18.6 Hz,1H), 4.35 (d, J=2.5 Hz, 2H), 4.30-4.22 (m, 2H), 3.73-3.64 (m, 2H), 1.31(t, J=7.0 Hz, 3H), 0.76-0.71 (m, 9H), −0.04 (m, 6H).

Intermediate 346F:5-((4-Cyanophenyl)carbamoyl)-6-(hydroxymethyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a solution of Intermediate 346E (0.7 g, 1.148 mmol) in THF (10 mL)and water (5 ml) was added LiOH (0.083 g, 3.45 mmol) and the reactionmass was stirred at RT for 24 h. The volatiles were evaporated; theresidue was diluted with water (10 mL) and neutralized with an aqueoussolution of 1.0 N HCl. The solid product separated was filtered anddried to afford Intermediate 346F (0.4 g, 74%) as an off-white solidwhich was taken to the next step without further purification. MS(ES):m/z=468 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 12.35-12.80 (br, 1H),9.33 (s, 1H), 7.69-7.74 (m, 2H), 7.62-7.68 (m, 2H), 5.20-5.30 (m, 1H),5.10-5.19 (m, 1H), 4.72 (d, J=4.53 Hz, 1H), 4.46 (d, J=18.51 Hz, 1H),4.27-4.38 (m, 2H), 3.40-3.48 (m, 2H).

Intermediate 346G:N-(4-Cyanophenyl)-6-(hydroxymethyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate 346F (0.12 g, 0.257 mmol) in dry DMF (3mL) was added HATU (0.195 g, 0.512 mmol), diisopropylethylamine (224 μL,1.128 mmol) and ammonium chloride (0.0687 g, 1.128 mmol) and thereaction mixture was stirred at room temperature for 4 h. The reactionmixture was concentrated completely to dryness and the crude waspartitioned between ethyl acetate and water. The organic layer wasseparated, washed with brine, dried over Na₂SO₄, filtered and thefiltrate concentrated. The crude product was purified by silica gelchromatography (12 g REDISEP® column, eluting with 3-5% methanol inchloroform). Fractions containing the product were combined to affordIntermediate 346G (0.08 g, 67%) as an off-white solid. MS(ES): m/z=467[M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.29 (s, 1H), 7.69-7.74 (m, 2H),7.63-7.69 (m, 2H), 7.37-7.48 (m, 1H), 6.93 (br. s., 1H), 5.22 (d,J=18.07 Hz, 1H), 5.13 (t, J=5.27 Hz, 1H), 4.72 (d, J=4.52 Hz, 1H), 4.51(d, J=18.57 Hz, 1H), 4.31-4.38 (m, 1H), 4.20-4.28 (m, 1H), 3.43 (t,J=6.02 Hz, 2H).

Compound 346:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-6-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of Intermediate 346G (0.07 g, 0.15 mmol),(3-chloro-4-fluorophenyl) boronic acid (0.0393 g, 0.225 mmol) and K₃PO₄(0.096, 0.45 mmol) in 1,4-dioxane (3 mL) and water (0.5 mL) was degassedwith nitrogen for 10 min. PdCl₂(dppf)-CH₂Cl₂ adduct (7.36 mg, 9.01 μmol)was added and the reaction mixture was stirred at 80° C. for 12 h. Thereaction mixture was concentrated and crude was partitioned betweenethyl acetate and water. The organic layer was separated, washed withbrine, dried over Na₂SO₄, filtered and the filtrate concentrated. Thecrude was purified via preparative HPLC to afford 346 as an off-whitesolid (20 mg, 30%). HPLC retention times 8.10 min. and 7.95 min.(Methods A and B); MS(ES): m/z=469 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δppm 9.35 (br. s., 1H), 7.90 (dd, J=7.28, 2.26 Hz, 1H), 7.66-7.76 (m,5H), 7.45-7.51 (m, 1H), 7.30-7.43 (m, 2H), 5.20 (d, J=17.57 Hz, 2H),4.80 (d, J=5.02 Hz, 1H), 4.54 (d, J=17.57 Hz, 1H), 4.36-4.42 (m, 1H),4.24-4.31 (m, 1H), 3.50 (d, J=6.02 Hz, 2H).

Intermediate 347A: Diethyl1-((3R,4S)-4-((tert-butoxycarbonyl)amino)tetrahydrofuran-3-yl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

To a solution of PPh₃ (2.72 g, 10.35 mmol) in THF (10 mL) at 0° C. wasadded DIAD (2.013 mL, 10.35 mmol) dropwise and stirred for 15 min. Asolution of Intermediate 104C (1.4 g, 4.14 mmol) in THF (10 mL) wasadded to the above reaction mixture and was stirred at 0° C. for 45 min.A solution of tert-butyl((3S,4R)-4-hydroxytetrahydrofuran-3-yl)carbamate (1.683 g, 8.28 mmol) inTHF (10 mL) was added dropwise at 0° C. and the reaction mixture wasstirred at RT for 12 h. The reaction mixture was then concentrated andthe crude compound was purified by silica gel chromatography (24 gREDISEP® column, eluting with 30% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate 347A (1.7 g, 81%) as a white solid. MS(ES): m/z=522 [M−H]⁺;The crude product was taken to the next step without furtherpurification.

Intermediate 347B: (5aS,8aR)-Ethyl2-iodo-4-oxo-4,5,5a,6,8,8a-hexahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3-carboxylate

To an ice-cold solution of Intermediate 347A (6.0 g, 11.5 mmol) indioxane (20 mL) was added a 4 M solution of HCl in dioxane (100 mL,11.47 mmol) and the reaction mixture was stirred at RT for 4 h. Thereaction mixture was concentrated; the pH of the residue was adjusted to8 with a 10% aqueous solution of NaHCO₃ and the mixture was stirred atRT for 30 min. then was extracted with EtOAc (3×100 mL). The combinedorganic layers were washed with water, dried over Na₂SO₄, concentratedand kept under vacuum at 60° C. for 6 h to obtain Intermediate 347B asan off-white solid (2.1 g, 48%). MS(ES): −m/z=378 [M+H]⁺; ¹H NMR (400MHz, DMSO-d₆) δ ppm 8.67 (d, J=3.5 Hz, 1H), 5.11-5.04 (m, 1H), 4.45 (dq,J=4.0, 6.5 Hz, 1H), 4.31-4.12 (m, 4H), 4.04-3.94 (m, 1H), 3.57 (dd,J=6.0, 9.0 Hz, 1H), 1.32-1.22 (m, 3H).

Intermediate 347C: (5aS,8aR)-Ethyl2-iodo-4,5,5a,6,8,8a-hexahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3-carboxylate

To a stirred solution of Intermediate 347B (0.5 g, 1.33 mmol) in THF (1mL) was added borane dimethyl sulfide complex (0.378 mL, 3.98 mmol) andthe reaction mixture was stirred at 40° C. for 16 h. Additional quantityof borane dimethyl sulfide complex (0.126 mL, 1.326 mmol) was added andthe reaction was stirred further for 16 h. The reaction was quenched byadding ethanol (3 mL) and allowing the solution to heat to reflux for 2h. The reaction mixture was concentrated to afford crude Intermediate347C as an off-white semi-solid which was taken as such for next stepwithout further purification Intermediate 347D: (5aS,8aR)-5-tert-Butyl3-ethyl2-iodo-5a,6,8,8a-tetrahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a stirred solution of Intermediate 347C (1.0 g, 2.75 mmol) in DCM (10mL) was added TEA (1.151 mL, 8.26 mmol) and stirred for 10 min.,followed by the addition of Boc₂O (0.767 mL, 3.30 mmol). The reactionmixture was allowed to stir at RT for 16 h., at which point it wasdiluted with water (50 mL) and extracted with DCM (3×50 mL). Thecombined organic layers were washed with water, dried over Na₂SO₄ andconcentrated. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with 50% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate 347D (0.56, 44% yield) as an off-white solid.MS(ES): −m/z=464 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆) δ ppm 5.30 (d, J=18.5Hz, 1H), 4.88 (dd, J=3.0, 7.2 Hz, 1H), 4.51-4.36 (m, 1H), 4.33-4.14 (m,2H), 4.13-4.00 (m, 1H), 3.98-3.86 (m, 1H), 3.82-3.71 (m, 1H), 1.49-1.39(m, 9H), 1.35-1.25 (m, 3H).

Intermediate 347E:(5aS,8aR)-5-(tert-Butoxycarbonyl)-2-iodo-4,5,5a,6,8,8a-hexahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a stirred solution of Intermediate 347D (0.85 g, 1.835 mmol) in THF(5 mL) was added a solution of NaOH (0.220 g, 5.50 mmol) in water (4 mL)and the reaction mixture was heated to 70° C. for 16 h. The reactionmixture was concentrated and the pH of the residue was adjusted to 4-5using an aqueous solution of citric acid. The formed precipitate wasfiltered, washed with n-hexanes and dried to afford Intermediate 347E(0.48 g, 51%) as an off-white solid. MS(ES): −m/z=434 [M−H]⁺; ¹H NMR(300 MHz, DMSO-d₆) δ ppm 12.80-12.67 (m, 1H), 5.30 (d, J=18.5 Hz, 2H),4.87 (dd, J=3.4, 6.8 Hz, 1H), 4.46-4.32 (m, 1H), 4.12-4.04 (m, 1H),3.98-3.90 (m, 1H), 3.89-3.82 (m, 1H), 3.80-3.69 (m, 1H), 1.43 (s, 9H).

Intermediate 347F: (5aS,8aR)-tert-Butyl3-carbamoyl-2-iodo-5a,6,8,8a-tetrahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 347E (0.480 g, 1.103 mmol) in DMF(10 mL) at RT was added DIPEA (0.963 mL, 5.51 mmol), HATU (0.839 g,2.206 mmol), and NH₄Cl (0.295 g, 5.51 mmol). After stirring for 12 h,the reaction mixture was diluted with water and extracted with EtOAc(3×50 mL). The combined organic layers were washed with water, driedover Na₂SO₄ and concentrated to afford Intermediate 347F (0.39 g, 74%)as a pale yellow oil. MS(ES): m/z=435 [M+H]⁺; ¹H NMR (300 MHz, DMSO-d₆)δ ppm 7.95 (s, 2H), 5.30-5.13 (m, 2H), 4.86 (dd, J=3.4, 7.6 Hz, 1H),4.38 (d, J=15.9 Hz, 1H), 4.14-4.03 (m, 1H), 3.98-3.82 (m, 2H), 3.75 (dd,J=6.6, 9.3 Hz, 1H), 1.43 (s, 9H).

Intermediate 347G: (5aS,8aR)-tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-5a,6,8,8a-tetrahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirred solution of Intermediate 347F (0.370 g, 0.852 mmol) and(3-chloro-4-fluorophenyl)boronic acid (0.297 g, 1.704 mmol) in dioxane(2 mL) was added a solution of K₃PO₄ (0.543 g, 2.56 mmol) in water (0.5mL) and the reaction mixture was purged with nitrogen for 10 min.PdCl₂(dppf)CH₂Cl₂ (0.052 g, 0.064 mmol) was then added and the reactionmixture was heated to 80° C. and stirred for 16 h. The reaction mixturewas diluted with water and extracted with EtOAc (3×30 mL). The combinedorganic layers were washed with water, dried over Na₂SO₄ andconcentrated. The crude compound was purified by silica gelchromatography (12 g REDISEP® column, eluting with 4% MeOH in CHCl₃).Fractions containing the product were combined and evaporated to affordIntermediate 347G (0.270 g, 54%) as an off-white solid. MS(ES): m/z=437[M+H]⁺.

Intermediate 347H:(5aS,8aR)-2-(3-Chloro-4-fluorophenyl)-4,5,5a,6,8,8a-hexahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3-carboxamideHC

To a stirred solution of Intermediate 347G (0.2 g, 0.458 mmol) indioxane (1 mL) was added a solution of HCl in dioxane (2 mL, 8.0 mmol, 4M). After stirring at RT for 2 h, the reaction mixture was concentratedand the crude product was triturated with hexanes to afford Intermediate347H (0.17 g, 71%) as an off-white solid. MS(ES): −m/z=337 [M+H]^(. 1)HNMR (400 MHz, DMSO-d₆) δ ppm 7.90 (ddd, J=1.8, 7.5, 14.3 Hz, 1H),7.80-7.68 (m, 2H), 7.54-7.47 (m, 1H), 7.38 (dd, J=8.3, 9.8 Hz, 1H), 5.10(br. s., 1H), 4.63 (br. s., 1H), 4.56 (s, 2H), 4.20-3.98 (m, 4H), 3.57(s, 1H).

Compound 347:(5aS,8aR)-2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-5a,6,8,8a-tetrahydrofuro[3,4-e]pyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound 347 was synthesized from Intermediate 347H using a syntheticsequence analogous to the preparation of Compound 297. HPLC retentiontimes 1.51 min. and 1.51 min. (Methods E and L respectively). MS(ES):m/z=481 [M+H]⁺; ¹H NMR (400 MHz, DMSO-d₆) δ ppm 9.52 (s, 1H), 7.90 (dd,J=2.0, 7.5 Hz, 1H), 7.76-7.69 (m, 3H), 7.67-7.61 (m, 2H), 7.48 (t, J=9.0Hz, 1H), 7.44-7.33 (m, 2H), 5.50 (q, J=7.4 Hz, 1H), 5.36 (d, J=17.1 Hz,1H), 4.93 (dd, J=3.0, 7.0 Hz, 1H), 4.54 (d, J=17.1 Hz, 1H), 4.22 (d,J=10.0 Hz, 1H), 4.04-3.96 (m, 2H), 3.89 (dd, J=6.5, 9.0 Hz, 1H).

The Compounds shown in Table 29 have been prepared similar to Compound347 by coupling of 347F with different boronic acids followed byde-protection of N-Boc group and coupling with 4-isocyanatobenzonitrile.

TABLE 29 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Methods348

(5aS,8aR)-2-(3-Chlorophenyl)- N⁵-(4-cyanophenyl)-5a,6,8,8a-tetrahydrofuro[3,4-e]pyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 4631.422 1.422 E L 349

(5aS,8aR)-N⁵-(4-Cyanophenyl)- 2-(3,4-dichlorophenyl)-5a,6,8,8a-tetrahydrofuro[3,4-e] pyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide 497 1.607 1.624 E L

Intermediate A1A: tert-Butyl (2,3-dihydroxypropyl)carbamate

The above Intermediate was synthesized according to a patent literatureprocedure reported in U.S. Publication No. 2006/69156 A1 (2006).

To a solution of 3-aminopropane-1,2-diol (10.0 g, 110 mmol) in MeOH (407mL) was added Boc₂O (35.9 g, 165 mmol) and TEA (55 mL, 395 mmol) and thereaction mixture was heated at 50° C. for 20 min., followed by stirringat room temperature for 12 h. The reaction was then concentrated underreduced pressure to provide a residue. It was purified by silica gelchromatography (330 g REDISEP® column, eluting with 5% MeOH in DCM).Fractions containing the product were combined and evaporated to affordIntermediate A1A (20.14 g, 96%) as a colorless oil. ¹H NMR (400 MHz,DMSO-d₆) δ ppm 6.61 (br. s., 1H), 4.63 (d, J=4.9 Hz, 1H), 4.47 (t, J=5.6Hz, 1H), 3.45 (d, J=5.6 Hz, 1H), 3.31-3.23 (m, 2H), 3.09-2.98 (m, 1H),2.85 (d, J=6.6 Hz, 1H), 1.38 (s, 9H).

Intermediate A1B: tert-Butyl(3-((tert-butyldimethylsilyl)oxy)-2-hydroxypropyl) carbamate

The above Intermediate was synthesized according to a patent literatureprocedure reported in U.S. Publication No. 2003/187026 A1 (2003).

To a solution of Intermediate A1A (20.14 g, 105 mmol) in DCM (168 mL)were added TEA (17.62 mL, 126 mmol), TBSCl (18.00 g, 116 mmol) and DMAP(0.515 g, 4.21 mmol) and the reaction mixture was stirred at roomtemperature for 16 h. The mixture was then diluted with DCM (100 mL) andthe organic layer was washed with water (3×100 mL), brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated underreduced pressure to provide a crude residue. It was purified by silicagel chromatography (330 g REDISEP® column, eluting with a gradient of 0to 30% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A1B (24.46 g, 76%) as a paleyellow oil. ¹H NMR (400 MHz, DMSO-d₆) δ ppm 6.58 (br. s., 1H), 4.69 (d,J=4.4 Hz, 1H), 3.55-3.42 (m, 3H), 1.37 (s, 9H), 0.92-0.82 (m, 9H).

Intermediate A1C: Ethyl 4-(3-chlorophenyl)-2,4-dioxobutanoate

To an ice-cold solution of 1-(3-chlorophenyl)ethanone (16.79 mL, 129mmol) and diethyl oxalate (18.05 mL, 136 mmol) in DMF (78.0 mL) wasadded, portionwise over 30 min., NaH (6.09 g, 155 mmol, 60% dispersionin mineral oil) and the resultant mixture was stirred at thattemperature for 20 min. and then at room temperature for 16 h. Thereaction mixture was diluted with water and acidified to pH 4-5 with 1Naq. HCl. The mixture was further diluted with copious amounts of water.The aq. layer was extracted with EtOAc (4×100 mL) and the combinedorganic layer was washed with water, brine, dried over anhydrous MgSO₄,filtered and the filtrate was concentrated under reduced pressure toprovide a crude residue. It was purified by silica gel chromatography(220 g REDISEP® column, eluting with a 0 to 15% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A1C (27.1 g, 84%) as a solid. MS(ES): m/z=277.10 [M+Na]⁺;¹H NMR (400 MHz, chloroform-d) δ ppm 7.99 (t, J=1.8 Hz, 1H), 7.95-7.86(m, 1H), 7.60 (ddd, J=8.0, 2.1, 1.0 Hz, 1H), 7.48 (t, J=7.9 Hz, 1H),7.06 (s, 1H), 4.43 (q, J=7.3 Hz, 2H), 1.44 (t, J=7.2 Hz, 3H).

Intermediate A1D: Ethyl 3-(3-chlorophenyl)-1H-pyrazole-5-carboxylate

To a suspension of Intermediate A1C (14.57 g, 57.2 mmol) in EtOH (191mL) was added hydrazine hydrate (5.57 mL, 57.2 mmol, 64% solution) andthe reaction mixture was stirred at room temperature for 16 h. Thereaction turned homogenous over time and then a solid precipitated out.The thick precipitate was filtered off. The filter cake was washed witha little EtOH to afford the product as a white solid. The filtrate wasrotavaped to dryness to afford the crude product as a yellow solid. Itwas suspended in a minimum amount of EtOH or MeCN and filtered off togive more of the product. The process of rotavaping the filtrate todryness and suspending the subsequent solid in EtOH or MeCN was repeated2-3 more times to provide more white product during each filtrationcycle. The combined solid was dried under vacuum for 3 h to affordIntermediate A1D (10.9 g, 76%). MS(ES): m/z=273 [M+Na]⁺; ¹H NMR (400MHz, DMSO-d₆) ppm 13.91 (br. s., 1H), 7.97 (t, J=1.8 Hz, 1H), 7.86 (dt,J=7.8, 1.4 Hz, 1H), 7.55-7.33 (m, 4H), 4.34 (q, J=7.2 Hz, 2H), 1.34 (t,J=7.2 Hz, 3H).

Intermediate A1E: Ethyl3-(3-chlorophenyl)-1-(2,2,3,3,11,11-hexamethyl-9-oxo-4,10-dioxa-8-aza-3-siladodecan-6-yl)-1H-pyrazole-5-carboxylate

To an ice-cold suspension of Intermediate A1D (7.0 g, 27.9 mmol) andPPh₃ (10.99 g, 41.9 mmol) in THF (112 mL) was added a solution of DIAD(8.57 mL, 41.9 mmol) in THF (15 mL). Soon the reaction mixture turnedhomogenous. It was stirred at that temperature for 30 min., followed bythe addition of a solution of Intermediate A1B (10.24 g, 33.5 mmol) inTHF (15 mL). The resultant reaction mixture was stirred at roomtemperature for 2 h and then diluted with EtOAc (150 mL). The organiclayer was washed with brine, dried over anhydrous MgSO₄, filtered andthe filtrate was concentrated under reduced pressure to provide a crudeoil. It was purified by silica gel chromatography (220 g REDISEP®column, eluting with 0 to 15% EtOAc in hexanes). Fractions containingthe product were combined and evaporated to afford Intermediate A1E(12.5 g, 83%) as a thick syrup. MS(ES): m/z=438.1 [M-Boc]+; ¹H NMR (400MHz, chloroform-d) δ ppm 7.97 (s, 1H), 7.91-7.83 (m, 1H), 7.53-7.37 (m,3H), 7.01 (s, 1H), 5.54 (br. s., 1H), 4.32 (q, J=7.0 Hz, 2H), 3.94 (d,J=6.0 Hz, 2H), 3.48 (s, 1H), 3.39 (d, J=7.5 Hz, 1H), 1.41-1.29 (m, 12H),0.74 (s, 9H).

Intermediate A1F: Ethyl1-(1-amino-3-hydroxypropan-2-yl)-3-(3-chlorophenyl)-1H-pyrazole-5-carboxylate,2HCl

To a solution of Intermediate A1E (21.0 g, 39 mmol) in 1,4-dioxane (156mL) was added a solution of HCl (166 mL, 663 mmol, 4M in 1,4-dioxane)and the reaction mixture was stirred at room temperature for 12 h. Thewhite precipitate that was generated was filtered off and the filtercake was washed with a little dioxane. The solid was dried under vacuumfor 4 h to afford Intermediate A1F as a bis HCl salt (11.9 g, 77%).MS(ES): m/z=324.0 [M+H]⁺.

Intermediate A1G:2-(3-Chlorophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a suspension of Intermediate A1F (5.23 g, 13.18 mmol) in EtOH (132mL) was added NH₄OH (171 mL, 1318 mmol) and the reaction mixture wasstirred at RT for 16 h. Soon the mixture became homogenous and a whiteprecipitate formed overnight. The solid was filtered off and thefiltrate was concentrated under reduced pressure to provide moreproduct. The combined white solid was dried overnight to affordIntermediate A1G (3.5 g, 96%). MS(ES): m/z=278.0 [M+H]⁺. ¹H NMR (400MHz, DMSO-d₆) ppm 8.22 (br. s., 1H), 7.94 (t, J=1.6 Hz, 1H), 7.86 (dt,J=7.7, 1.3 Hz, 1H), 7.52-7.38 (m, 2H), 7.34 (s, 1H), 7.07 (br. s., 1H),5.29 (t, J=5.8 Hz, 1H), 4.54-4.42 (m, 1H), 3.86-3.71 (m, 3H), 3.65 (dt,J=13.4, 4.1 Hz, 1H).

Intermediate A1H:7-(((tert-Butyldimethylsilyl)oxy)methyl)-2-(3-chlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a solution of Intermediate A1G (4.365 g, 15.72 mmol) in DMF (157 mL)was added imidazole (1.380 g, 20.28 mmol) and TBSCl (2.84 g, 18.86 mmol)and the reaction mixture was stirred at room temperature for 2 h. Mostof the DMF was concentrated under reduced pressure and the residue wasdiluted with water to generate a white precipitate. This solid wasfiltered off and the filter cake was dried under vacuum for 4 h toafford Intermediate A1H (5.1 g, 83%). MS(ES): m/z=392.1 [M+H]⁺. ¹H NMR(400 MHz, DMSO-d₆) δ ppm 8.21 (br. s., 1H), 7.94 (t, J=1.6 Hz, 1H), 7.86(dt, J=7.5, 1.3 Hz, 1H), 7.52-7.37 (m, 2H), 7.35 (s, 1H), 4.58 (br. s.,1H), 4.09-3.92 (m, 2H), 3.63 (s, 1H), 0.91-0.79 (m, 9H).

Intermediate A1I:(2-(3-Chlorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-7-yl)methanol

To a solution of Intermediate A1H (4.945 g, 12.61 mmol) in THF (126 mL)was added, dropwise at −15° C., a 1M solution of LAH in THF (31.5 mL,31.5 mmol) and the reaction mixture was stirred at that temperature for3 h. LC-MS shows mainly unreacted starting material. Hence, more 1M LAHsolution in THF (6.31 mL, 6.31 mmol, 0.5 equivalent) was added dropwiseat −15° C. and the RM was allowed to gradually warm to room temperatureand stir further for 16 h. The reaction mixture was carefully quenchedat −15° C. with sequential addition of H₂O (31.5 mL), NaOH (15% aq.solution, 31.5 mL), and H₂O (92 mL). The slurry was then allowed to stirat room temperature for ˜30 min., followed by the addition of anhydrousMgSO₄. The mixture was stirred further for 15 min. and then theinorganics were filtered off. The filter cake was washed with THF (150mL). The biphasic filtrate was concentrated under reduced pressure toremove THF. The residual aq. layer was extracted with DCM (3×50 mL). Thecombined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and concentrated under reduced pressure to afford TBScleaved Intermediate A1I (3.1 g, 93%) as a slightly impure yellow stickysolid. MS(ES): m/z=264.0 [M+H]⁺.

Intermediate A1J:7-(((tert-Butyldimethylsilyl)oxy)methyl)-2-(3-chlorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a solution of Intermediate A1I (2.37 g, 8.97 mmol) in DCM (90 mL)were added TBSCl (2.57 g, 17.05 mmol), DMAP (0.164 g, 1.346 mmol) andTEA (3.75 mL, 26.9 mmol) and the reaction mixture was stirred at roomtemperature for 6 h. It was then diluted with a saturated solution ofaq. NaHCO₃ and the two layers were separated. The aq. layer wasback-extracted with DCM (2×50 mL). The combined organic layer was washedwith water, brine, dried over anhydrous MgSO₄, filtered and concentratedunder reduced pressure to give an oil. It was purified by silica gelchromatography (120 g REDISEP® column, eluting with a gradient of 40-65%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford Intermediate A1J (3.194 g, 94%) as a colorless oil.MS(ES): m/z=378.1 [M+H]⁺.

Intermediate A1K: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-chlorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A1J (3.194 g, 8.45 mmol) in DCM (85 mL)were added Boc₂O (2.213 g, 10.14 mmol), DMAP (0.103 g, 0.845 mmol) andTEA (3.53 mL, 25.4 mmol) and the reaction mixture was stirred at roomtemperature for 2 h. It was then quenched with a saturated solution ofaq. NaHCO₃ and the two layers were separated. The aq. layer wasback-extracted with DCM (2×50 mL). The combined organic layer was washedwith brine, dried, over anhydrous MgSO₄, filtered and concentrated underreduced pressure to give a solid. It was purified by silica gelchromatography (120 g REDISEP® column, eluting with 20% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A1K (3.392 g, 84%) as an oil. MS(ES): m/z=478.08[M+H]⁺.

Intermediate A1L: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-chlorophenyl)-3-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A1K (3.392 g, 7.09 mmol) in DCM (37.8 mL)and MeOH (9.46 mL) was added NIS (7.66 g, 34.1 mmol) and the reactionmixture was stirred at RT for 2 h. The solution was then concentratedunder reduced pressure to provide a solid. It was purified by silica gelchromatography (120 g REDISEP® column, eluting with a gradient of 10 to15% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A1L (4.28 g, >99%) as asemi-solid. MS(ES): m/z=604.08 [M+H]⁺.

Intermediate A1M: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-chlorophenyl)-3-cyano-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A1L (1.0 g, 1.656 mmol) in DMF (16.56 mL)was added CuCN (0.371 g, 4.14 mmol) and the reaction mixture was heatedin a sealed tube in an oil bath at 120° C. for 16 h. The inorganics werethen filtered off and the filter cake was washed with EtOAc. Thecombined filtrate was concentrated under reduced pressure to give acrude residue. It was purified by silica gel chromatography (80 gREDISEP® column, eluting with a gradient of 10 to 15% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A1M (0.425 g, 51%) as an oil. MS(ES): m/z=504.08 [M+H]⁺; ¹HNMR (400 MHz, DMSO-d₆) δ ppm 7.90-7.78 (m, 2H), 7.69-7.50 (m, 2H), 4.88(d, J=17.6 Hz, 1H), 4.71 (d, J=17.6 Hz, 1H), 4.48 (br. s., 1H), 4.13(br. s., 1H), 4.00-3.91 (m, 2H), 3.81 (br. s., 1H), 1.53-1.43 (m, 9H),0.88-0.77 (m, 9H).

Intermediate A1N: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A1M (1.4 g, 2.78 mmol) in DMSO (27 mL) wasadded a 5M aq. solution of KOH (2.78 mL, 13.91 mmol) and H₂O₂(5.68 mL,55.7 mmol, 30% w/v in H₂O) and the reaction mixture was stirred at roomtemperature for 3 h. It was then diluted with a lot of water and the aq.phase was extracted with EtOAc (3×50 mL). The combined organic layer waswashed with water, brine, dried over anhydrous MgSO₄, filtered andconcentrated under reduced pressure to give a crude solid. It waspurified by silica gel chromatography (80 g REDISEP® column, elutingwith 100% EtOAc). Fractions containing the product were combined andevaporated to afford TBS cleaved Intermediate A1N (0.95 g, 84%) as awhite solid. MS(ES): m/z=407 [M+H]⁺.

Intermediate A10:2-(3-Chlorophenyl)-7-(hydroxymethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate A1N (0.17 g, 0.418 mmol) in DCM (4.18 mL)was added TFA (0.644 mL, 8.36 mmol) and the reaction mixture was stirredat room temperature for 1 h. The volatiles were then evaporated underreduced pressure and the residue was basified with saturated aq.solution of NaHCO₃. The two layers were separated and the aq. layer wasextracted with DCM (3×10 mL). The combined organic layer was washed withbrine, dried over anhydrous MgSO₄, filtered and concentrated underreduced pressure to give a crude solid. It was purified by silica gelchromatography (25 g REDISEP® column, eluting with 35% MeOH in DCM).Fractions containing the product were combined and evaporated to affordIntermediate A1O (0.073 g, 57%) as a white solid. MS(ES): m/z=307[M+H]⁺.

Compound A1:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A1O (0.027 g, 0.088 mmol) in DMF (1.76 mL)were added 4-isocyanatobenzonitrile (0.019 g, 0.132 mmol) and TEA (0.037mL, 0.264 mmol) and the reaction mixture was stirred at room temperaturefor 2 h. The mixture was then filtered off and the filtrate was purifiedvia preparative LC/MS. Fractions containing the desired product werecombined and evaporated to afford Compound A1 (0.029 g, 70%). MS(ES):m/z=451 [M+H]⁺; HPLC Ret. Time 1.41 min. and 2.16 min. (HPLC Methods Hand I); ¹H NMR (600 MHz, DMSO-d₆) δ ppm 7.77-7.69 (m, 3H), 7.69-7.60 (m,3H), 7.50-7.40 (m, 2H), 7.38 (br. s., 1H), 7.23 (br. s., 1H), 4.99-4.84(m, 2H), 4.38-4.28 (m, 1H), 4.12-4.01 (m, 2H), 3.96-3.87 (m, 1H), 3.81(dd, J=11.0, 7.3 Hz, 1H), 1.91 (s, 1H).

The Compounds described in Table 30 were synthesized by reactingIntermediate A1O with the corresponding aniline.

TABLE 30 Ret. Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method A2

N⁵-(3- Chloro-4-cyanophenyl)- 2-(3-chlorophenyl)-7- (hydroxymethyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide A 485.2 1.43 2.32H I A3

2-(3-Chlorophenyl)-N⁵-(4- cyano-3-fluorophenyl)-7- (hydroxymethyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide A 469.2 1.52 2.31H I A4

2-(3-Chlorophenyl)-N⁵- (3,5-dichlorophenyl)-7- (hydroxymethyl)-6,7-dihydropyrazolo [1,5-a]pyrazine- 3,5(4H)-dicarboxamide A 495.90 2.29,2.70 H I

Intermediate A5A: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-(fluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a suspension of Intermediate A1N (0.15 g, 0.369 mmol) in DCM (4.92mL) cooled to −78° C., was added DAST (0.073 mL, 0.553 mmol). Soon thereaction mixture turned homogenous. The reaction was stirred at roomtemperature for 2 h. It was quenched with a saturated aq. solution ofNaHCO₃. The organic layer was separated and the aq. layer was extractedwith DCM (3×10 mL). The combined organic layer was washed with brine,dried over anhydrous MgSO₄, filtered and the filtrate concentrated underreduced pressure to give an oil. It was purified by silica gelchromatography (25 g REDISEP® column, eluting with 55% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A5A (0.054 g, 35.8%) as a white solid. MS(ES):m/z=409 [M+H]⁺.

Intermediate A5B:2-(3-Chlorophenyl)-7-(fluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,2 TFA

To a solution of Intermediate A5A (0.054 g, 0.132 mmol) in DCM (1.321mL) was added TFA (0.102 mL, 1.321 mmol) and the reaction mixture wasstirred at room temperature for 1 h. It was then concentrated underreduced pressure to provide a residue. The residue was dried undervacuum to afford Intermediate A5B as the bis TFA salt (0.071 g, >99%).MS(ES): m/z=309.0 [M+H]⁺.

Compound A5:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-7-(fluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A5B (0.035 g, 0.065 mmol) in DMF (0.65 mL)were added 4-isocyanatobenzonitrile (0.019 g, 0.130 mmol) and DIPEA(0.057 mL, 0.326 mmol) and the reaction mixture was stirred at roomtemperature for 1 h. The mixture was then filtered off and the filtratewas purified via preparative LC/MS. Fractions containing the desiredproduct were combined and evaporated to afford Compound AS (0.017 g,59%). MS(ES): m/z=453.30 [M+H]⁺; HPLC Ret. Time 1.44 min. and 2.31 min.(HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.73 (d, J=7.6Hz, 3H), 7.67 (d, J=8.5 Hz, 3H), 7.51-7.38 (m, 3H), 7.31 (br. s., 1H),5.08 (d, J=5.8 Hz, 1H), 5.04-4.86 (m, 3H), 4.81 (d, J=7.9 Hz, 1H), 4.70(br. s., 1H), 4.65 (br. s., 1H), 4.18 (d, J=10.1 Hz, 1H), 4.04 (dd,J=14.0, 6.4 Hz, 1H).

The Compounds described in Table 31 were synthesized by reactingIntermediate A5B with the corresponding reagents.

TABLE 31 Ret. Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method A6 

(S)-N⁵-(3-Chloro- 4-cyanophenyl)- 2-(3-chlorophenyl)-7-(fluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 487.3 1.70, 2.62 H I A7 

(R)-N⁵-(3-Chloro- 4-cyanophenyl)- 2-(3-chlorophenyl)-7-(fluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 487.4 1.70, 2.64 H I A8 

(S)-2-(3- Chlorophenyl)-N⁵- (4-cyano-3-fluorophenyl)-7-(fluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 471.3 1.64, 2.53 H I A9 

(R)-2-(3- Chlorophenyl)-N⁵- (4-cyano-3-fluorophenyl)-7-(fluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 471.4 1.61, 2.55 H I A10

(S)-2-(3- Chlorophenyl)-7- (fluoromethyl)-N⁵-(4-(piperidin-1-yl)phenyl)- 6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)-dicarboxamide D 511.2 1.794, 3.106 H I A11

(R)-2-(3-Chlorophenyl)- 7-(fluoromethyl)-N⁵-(4- (piperidin-1-yl)phenyl)-6,7- dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide D 511.21.785, 3.115 H I

Intermediate A12A: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-formyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a suspension of Intermediate A1N (0.2 g, 0.492 mmol) in DCM (4.92 mL)was added Dess-Martin periodinane (0.271 g, 0.639 mmol) and the reactionmixture was stirred at RT for 16 h. The mixture was then quenched with asaturated solution of aq. NaHCO₃. The two layers were separated and theaq. layer was extracted with DCM (2×10 mL). The combined organic layerwas washed with brine, dried over anhydrous MgSO₄, filtered and thefiltrate was concentrated under reduced pressure to give an oil. It waspurified by silica gel chromatography (40 g REDISEP® column, elutingwith a gradient of 75% EtOAc in hexanes to 100% EtOAc). Fractionscontaining the product were combined and evaporated to affordIntermediate A12A (0.054 g, 35.8%) as a white solid. MS(ES): m/z=409[M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 9.75 (s, 1H), 7.65-7.54 (m,1H), 7.54-7.33 (m, 4H), 5.50 (br. s., 1H), 4.96 (d, J=16.8 Hz, 2H), 4.77(br. s., 1H), 4.59 (d, J=16.1 Hz, 1H), 3.65 (d, J=12.3 Hz, 1H),1.58-1.37 (m, 9H).

Intermediate A12B: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-(difluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A12A (0.105 g, 0.259 mmol) in DCM (2.59mL) at 0° C. was added, DAST (0.103 mL, 0.778 mmol) and the reactionmixture was stirred at room temperature for 16 h. The reaction was thenquenched with a saturated aq. solution of NaHCO₃. The two layers wereseparated and the aq. layer was extracted with DCM (2×10 mL). Thecombined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate concentrated under reduced pressure togive an oil. It was purified by silica gel chromatography (25 g REDISEP®column, eluting with a gradient of 55 to 65% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A12B as a yellow solid. MS(ES): m/z=427 [M+H]⁺.Intermediate A12C:2-(3-Chlorophenyl)-7-(difluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,2 TFA

Intermediate A12C was synthesized analogous to Intermediate A5B (Scheme39) by reacting Intermediate A12B with TFA. Intermediate A12C (0.029 g,20%) was subjected to analoging as the bis TFA salt. MS(ES): m/z=327[M+H]⁺.

Compound A12:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-7-(difluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound A12 was synthesized analogous to Compound A5 by reactingIntermediate A12C with 4-isocyanatobenzonitrile. MS(ES): m/z=471.08[M+H]⁺; HPLC Ret. time 1.48 min. and 2.35 min. (HPLC Methods H and Irespectively); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.96 (s, 1H), 7.78-7.70(m, 3H), 7.67 (d, J=8.5 Hz, 3H), 7.54-7.42 (m, 3H), 7.35 (br. s., 1H),6.55 (br. s., 1H), 5.16 (d, J=17.1 Hz, 1H), 4.93 (br. s., 1H), 4.82 (d,J=17.4 Hz, 1H), 4.50 (dd, J=14.3, 3.1 Hz, 1H), 3.93-3.79 (m, 1H).

Intermediate A13A: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-(((methylsulfonyl)oxy)methyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To an ice-cold suspension of Intermediate A1N (0.3 g, 0.737 mmol) in DCM(7.37 mL) was added TEA (0.123 mL, 0.885 mmol), followed by a dropwiseaddition of methanesulfonyl chloride (0.063 mL, 0.811 mmol). Theresultant homogenous reaction mixture was stirred at room temperaturefor 2 h. The reaction was then quenched with a saturated aq. solution ofNaHCO₃. The two layers were separated and the aq. layer was extractedwith DCM (2×10 mL). The combined organic layer was washed with brine,dried over anhydrous MgSO₄, filtered and the filtrate was concentratedunder reduced pressure to give an oil. It was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient of 75% to85% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A13A (0.208 g, 58.2%) as a whitefoam. MS(ES): m/z=485 [M+H]⁺.

Intermediate A13B: tert-Butyl3-carbamoyl-2-(3-chlorophenyl)-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A13A (0.08 g, 0.165 mmol) in THF (3.30 mL)was added dropwise at room temperature, a 1M solution of LiEt₃BH in THF(1.650 mL, 1.650 mmol) and the reaction mixture was stirred for 2 h. Itwas then carefully quenched with water and extracted with DCM (3×10 mL).The combined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate concentrated under reduced pressure togive an oil. It was purified by silica gel chromatography (25 g REDISEP®column, eluting with a 50% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A13B (0.053g, 81%) as a white foam. MS(ES): m/z=391.1 [M+H]⁺.

Intermediate A13C:2-(3-Chlorophenyl)-7-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,2 TFA

Intermediate A13C was synthesized analogous to Intermediate A5B byreacting Intermediate A13B with TFA. Intermediate A13C (0.07 g, >99%)was subjected to analoging as the bis TFA salt. MS(ES): m/z=291 [M+H]⁺.

Compound A13:2-(3-Chlorophenyl)-N⁵-(4-cyanophenyl)-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound A13 was synthesized analogous to Compound A5 by reactingIntermediate A13C with 4-isocyanatobenzonitrile. MS(ES): m/z=435.0[M+H]⁺; HPLC Ret. Time 1.48 min. and 2.41 min. (Methods H and Irespectively); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 9.38 (s, 1H), 7.77-7.59(m, 6H), 7.49-7.41 (m, 2H), 7.38 (br. s., 1H), 7.22 (br. s., 1H), 4.97(d, J=17.1 Hz, 1H), 4.86 (d, J=17.1 Hz, 1H), 4.53-4.38 (m, 1H), 4.11(dd, J=13.7, 3.7 Hz, 1H), 3.72 (dd, J=14.2, 6.9 Hz, 1H), 2.89 (s, 1H),2.73 (s, 1H), 1.49 (d, J=6.4 Hz, 3H).

Intermediate A14A: Diethyl1-(2,2,3,3,11,11-hexamethyl-9-oxo-4,10-dioxa-8-aza-3-siladodecan-6-yl)-3-iodo-1H-pyrazole-4,5-dicarboxylate

A solution of Intermediate 104C (1.0 g, 2.96 mmol), Intermediate A1B(1.13 g, 3.70 mmol), triphenylphosphine (0.78 g, 2.96 mmol) and TEA(0.41 mL, 2.96 mmol) in THF (14.79 mL) was cooled to 0° C. and to it wasadded DTBAD (0.7 g, 2.96 mmol). The reaction mixture was then allowed tostir at room temperature for 16 h and then diluted with water and EtOAc.The two layers were separated and the aq. layer was extracted with EtOAc(2×20 mL). The combined organic layer was washed with brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated to give anoil. It was purified by silica gel chromatography (80 g REDISEP® column,eluting with a gradient of 0 to 15% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A14A (1.2 g, 65%) as a solid. MS(ES): m/z=648.1 [M+Na]⁺.

Intermediate A14B: Ethyl7-(hydroxymethyl)-2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate A14A (21.5 g, 34.4 mmol) in DCM (344 mL)was added TFA (47.7 mL, 619 mmol) and the reaction mixture was allowedto stir at room temperature for 48 h. The volatiles were thenconcentrated under reduced pressure. The residue thus obtained wasdirectly taken up in EtOH (75 mL) and to it was added ammonium hydroxide(581 mL, 447 mmol, 30% aq.). Soon a precipitate was generated. Thestirring was continued for 1 h at room temperature. The generated solidwas filtered off. The filter cake was rinsed with a small amount ofEtOH. The combined filtrate was partially evaporated under reducedpressure to generate more precipitate. This solid was combined with theinitial filter cake and air-dried to afford Intermediate A14B (18 g,71.6%) as a white solid. MS(ES): m/z=365.8 [M+H]⁺.

Intermediate A14C: Ethyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-iodo-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate

To a solution of Intermediate A14B (16.79 g, 46.0 mmol) in DMF (230 mL)was added TBSCl (8.32 g, 55.2 mmol), followed by imidazole (4.70 g, 69.0mmol) and the reaction mixture was stirred at room temperature for 1 h.The mixture was then concentrated to dryness, the residue was dilutedwith water and extracted with DCM (2×200 mL). The combined organic layerwas washed with brine, dried over anhydrous MgSO₄, filtered and thefiltrate was concentrated to give an oil. It was purified by silica gelchromatography (REDISEP® 330 g, eluting with a gradient of 10 to 55%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford Intermediate A14C (16 g, 72.6%) as a solid. MS(ES):m/z=479.9 [M+H]⁺.

Intermediate A14D: 5-tert-Butyl 3-ethyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-iodo-4-oxo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a solution of Intermediate A14C (11.74 g, 24.49 mmol) in toluene (188mL) was added DMAP (4.49 g, 36.7 mmol), followed by Boc₂O (6.41 g, 29.4mmol) and the reaction mixture was heated in an oil bath at 60° C. for 1h and then at room temperature for 16 h. It was then concentrated todryness to afford a solid residue, which was purified by silica gelchromatography (REDISEP® 220 g, eluting with a gradient of 5 to 25%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford Intermediate A14D (13.7 g, 96%) as a white solid.MS(ES): m/z=580.1 [M+H]⁺.

Intermediate A14E: 5-tert-Butyl 3-ethyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxylate

To a −10° C. solution of Intermediate A14D (1.0 g, 1.726 mmol) in THF(4.31 mL), was added SUPER-HYDRIDE® (2.07 mL, 2.071 mmol, 1M in THF)dropwise over 30 min., and the reaction mixture was stirred at 0° C. for2 h. It was then quenched with water and extracted with EtOAc (2×25 mL).The combined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate was concentrated to afford thepartially reduced Intermediate as a foam. MS(ES): m/z=604.15 [M+Na]⁺. Itwas used in the next step without further purification.

To a −78° C. solution of the above Intermediate in DCM (˜8 mL) wasadded, triethylsilane (0.85 mL, 5.18 mmol), followed by BF₃.OEt₂ (0.65mL, 5.18 mmol) and the reaction mixture was stirred at that temperaturefor 1 h. Thereafter, more triethylsilane (0.852 mL, 5.18 mmol) andBF₃.OEt₂ (0.656 mL, 5.18 mmol) were added and stirring continued at −78°C. for 3 h. The reaction was quenched with a satd. aq. solution ofNaHCO₃, the two layers were separated and the aq. layer was extractedwith DCM (2×15 mL). The combined organic layer was washed with brine,dried over anhydrous MgSO₄, filtered and the filtrate was concentratedto afford an oil. It was purified by silica gel chromatography (80 gREDISEP® column, eluting with a gradient of 5 to 15% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A14E (0.42 g, 43%) as a white solid. MS(ES): m/z=566.15[M+H]⁺.

Intermediate A14F:5-(tert-Butoxycarbonyl)-7-(hydroxymethyl)-2-iodo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a solution of Intermediate A14E (10.0 g, 17.68 mmol) in ethanol (26.8mL) and THF (53.6 mL) was added a suspension of LiOH (6.05 g, 248 mmol)in water (17.86 mL) and the reaction mixture was stirred at roomtemperature for 48 h. The volatiles were concentrated under reducedpressure and the aq. residue was extracted with Et₂O. The Et₂O layer wasdiscarded and the aq. layer was acidified with a 1N aqueous solution ofHCl to pH=2. It was then extracted with DCM (4×50 mL). The combinedorganic layer was washed with brine, dried over anhydrous MgSO₄,filtered and the filtrate was concentrated to afford Intermediate A14F(6.87 g, 92%) as a white solid, with the concomitant loss of the TBSgroup. MS(ES): m/z=446.1 [M+Na]⁺.

Intermediate A14G: tert-Butyl3-carbamoyl-7-(hydroxymethyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A14F (6.87 g, 16.23 mmol) in DMF (27.1 mL)were added DIPEA (11.34 mL, 64.9 mmol) and HATU (12.34 g, 32.5 mmol) andthe mixture was stirred at room temperature for 30 min., followed by theaddition of NH₄Cl (3.47 g, 64.9 mmol). The resultant mixture continuedto stir at room temperature for 16 h. It was diluted with water (250 mL)and extracted with DCM (3×70 mL). The combined organic layer was washedwith copious amounts of water, brine, dried over anhydrous MgSO₄,filtered and the filtrate was concentrated to afford an oil. It waspurified by silica gel chromatography (120 g REDISEP® column, elutingwith 5% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A9G (6.75 g, 98%) as asolid. MS(ES): m/z=423.1 [M+H]⁺.

Intermediate A14H: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a degassed solution of Intermediate A14G (5.1 g, 12.08 mmol) and(3-chloro-4-fluorophenyl)boronic acid (3.16 g, 18.12 mmol) in a 2Maqueous solution of K₃PO₄ (18.12 mL, 36.2 mmol) and 1,4-dioxane (121 mL)was added PdCl₂(dppf) (0.884 g, 1.208 mmol). The reaction mixture wasdegassed again for 5 min. and then heated in a sealed tube in an oilbath at 85° C. for 16 h. The mixture was concentrated under reducedpressure to near dryness, the residue was partitioned between DCM andwater, the two layers were separated and the aq. layer was extractedwith DCM (2×40 mL). The combined organic layers were washed with brine,dried over anhydrous MgSO₄, filtered and the filtrate was concentratedto afford an oil. It was purified by silica gel chromatography (120 gREDISEP® column, eluting with a gradient of 65 to 90% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A14H (5.08 g, >99%) as a pale brown solid. MS(ES):m/z=425.2 [M+H]⁺. Intermediate A141: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(fluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a −78° C. solution of Intermediate A14H (1.84 g, 4.33 mmol) in DCM(43.3 mL) was added DAST (0.57 mL, 4.33 mmol) dropwise and then thereaction mixture was allowed to stir at room temperature for 2 h. It wasquenched with a satd. aq. solution of NaHCO₃, the organic layer wasseparated and the aq. layer was extracted with DCM (2×20 mL). Thecombined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate was concentrated under reduced pressureto give a solid. It was purified by silica gel chromatography (120 gREDISEP® column, eluting with a gradient of 10 to 55% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A14I (0.56 g, 30.2%) as a white solid. MS(ES): m/z=427.2[M+H]⁺.

Intermediate A14J:2-(3-Chloro-4-fluorophenyl)-7-(fluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate A14I (0.2 g, 0.466 mmol) in DCM (4.66 mL)was added TFA (0.72 mL, 9.32 mmol) and the reaction mixture was stirredat room temperature for 2 h. The volatiles were evaporated and theresidue was basified with a satd. aq. solution of NaHCO₃ and extractedwith a 5% solution of MeOH in DCM (3×10 mL). The combined organic layerwas washed with brine, dried over anhydrous MgSO₄, filtered and thefiltrate was concentrated under reduced pressure to give IntermediateA14J (0.15 g, 100%) as an off-white solid. MS(ES): m/z=327.2 [M+H]⁺.

Compounds A14 and A15:N⁵-(3-Chloro-4-cyanophenyl)-2-(3-chloro-4-fluorophenyl)-7-(fluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of 4-amino-2-chlorobenzonitrile (0.047 g, 0.306 mmol) and TEA(0.085 mL, 0.612 mmol) in THF (3.4 mL) was added dropwise to an ice-coldsolution of triphosgene (0.034 g, 0.115 mmol) in THF (3.4 mL). Thismixture was continued to stir at that temperature for 30 min., followedby the addition of a solution of Intermediate A14J (0.05 g, 0.153 mmol)in DMF (1.7 mL). The resultant reaction mixture was stirred at roomtemperature for 16 h. The volatiles were evaporated under reducedpressure and the residue was purified by preparative HPLC to afford aracemic mixture of Compounds A14 and A15. The individual enantiomers A14and A15 were separated by chiral SFC purification using CHIRALPAK® IApreparative column (30×250) mm, 5 μm column, mobile phase 40% MeOH inCO₂, back pressure 150 bar, temperature 35° C., flow rate 70.0 mL/minfor 11 min. UV monitored at 265 nm. Compound A14 (S)-isomer was elutedat 7.24 min. (12.2 mg, 100% ee, Yield=15.78%) and Compound A15(R)-isomer was eluted at 8.61 min. (13.4 mg, 100% ee, Yield=17.33%). MS:m/z=505.3 [M+H]⁺; HPLC Ret. Time 1.73 min. and 2.69 min. (Methods H andI respectively); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.92-7.80 (m, 3H),7.75-7.66 (m, 1H), 7.59 (d, J=9.2 Hz, 1H), 7.49 (t, J=9.0 Hz, 1H), 7.43(br. s., 1H), 7.31 (br. s., 1H), 5.02-4.92 (m, 2H), 4.90 (d, J=13.9 Hz,1H), 4.80 (d, J=9.9 Hz, 1H), 4.69 (br. s., 1H), 4.65 (br. s., 1H), 4.17(dd, J=14.3, 4.4 Hz, 1H), 4.05 (dd, J=14.1, 6.8 Hz, 1H).

The Compounds described in Table 32 were synthesized by reactingIntermediate A14J with the corresponding aniline.

TABLE 32 Ret. Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method A16

(S)-2-(3-Chloro-4- fluorophenyl)- N⁵-(4-cyano-3- fluorophenyl)-7-(fluoromethyl)- 6,7- dihydropyrazolo[1,5- a]pyrazine-3,5(4H)-dicarboxamide B 489.3 1.67, 2.59 H I A17

(R)-2-(3-Chloro-4- fluorophenyl)- N⁵-(4-cyano-3- fluorophenyl)-7-(fluoromethyl)- 6,7- dihydropyrazolo[1,5- a]pyrazine-3,5(4H)-dicarboxamide B 489.3 1.64, 2.59 H I

Intermediate A18C:2-(3-Chloro-4-fluorophenyl)-7-(difluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate A18C was synthesized from Intermediate A14H by followingthe synthetic sequence shown in Scheme 40 for the synthesis ofIntermediate A12C. MS(ES): m/z=345.0 [M+H]⁺.

Compounds A18 and A19:(S)—N⁵-(3-Chloro-4-cyanophenyl)-2-(3-chloro-4-fluorophenyl)-7-(difluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

The racemic mixture of Compounds A18 and A19 was synthesized analogousto Compounds A14 and A15 (Scheme 42) by reacting Intermediate A18C with4-amino-2-chlorobenzonitrile. The individual enantiomers A18 and A19were separated by chiral SFC purification using CHIRALPAK® ASpreparative column (21×250) mm, 10 m column, Solvent A: 0.1%diethylamine in heptane, Solvent B: 100% EtOH, start % B: 30, isocratic,flow rate 15.0 mL/min for 32 min. UV monitored at 254 nm. Compound A18(S)-isomer was eluted at 21.012 min. (10.4 mg, 100% ee, Yield=12.65%)and A19 (R)-isomer was eluted at 11.008 min. (10.6 mg, 100% ee,Yield=12.76%). MS(ES): m/z=523.3 [M−H]⁺; HPLC Ret. Time 1.77 min. and2.70 min. (Methods H and I respectively); ¹H NMR (500 MHz, DMSO-d₆) δppm 7.93-7.80 (m, 3H), 7.69 (d, J=4.8 Hz, 1H), 7.60 (d, J=8.1 Hz, 1H),7.55-7.44 (m, 2H), 7.40 (br. s., 1H), 5.18 (d, J=17.2 Hz, 1H), 4.93 (br.s., 1H), 4.82 (d, J=16.9 Hz, 1H), 4.51 (d, J=11.7 Hz, 1H), 3.88 (d,J=13.6 Hz, 1H), 3.39 (br. s., 1H).

The Compounds described in Table 33 were synthesized analogous toCompounds A18 and A19 by reacting Intermediate A18C with thecorresponding reagents.

TABLE 33 Ret. Ex. Synthetic Time HPLC No. Structure Name Method [M + H]⁺(min.) Method A20

(S)-2-(3-Chloro-4- fluorophenyl)-N⁵- (4-cyanophenyl)-7-(difluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide A 489.4 1.62 2.43 H I A21

(R)-2-(3- Chloro-4-fluorophenyl)- N⁵-(4-cyanophenyl)-7-(difluoromethyl)-6,7- dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide A 489.3 1.60 2.42 H I A22

(S)-2-(3- Chloro-4-fluorophenyl)- N⁵-(4-cyano-3- fluorophenyl)-7-(difluoromethyl)- 6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 507.2 1.65 2.48 H I A23

(R)-2-(3- Chloro-4-fluorophenyl)- N⁵-(4-cyano-3- fluorophenyl)-7-(difluoromethyl)- 6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)-dicarboxamide B 507.2 1.65 2.48 H I

Intermediate A24A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(morpholinomethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A18A (0.17 g, 0.402 mmol) in DCM (5.36 mL)and MeOH (2.68 mL) was added morpholine (0.088 mL, 1.005 mmol), followedby sodium cyanoborohydride (0.076 g, 1.21 mmol) and glacial acetic acid(0.023 mL, 0.402 mmol). The reaction mixture was stirred at roomtemperature for 8 h. It was quenched with a satd. aq. solution ofNaHCO₃, the two layers were separated and the aq. layer was extractedwith DCM (2×10 mL). The combined organic layer was washed with brine,dried over anhydrous MgSO₄, filtered and the filtrate was concentratedunder reduced pressure to afford an oil. It was purified by silica gelchromatography (24 g REDISEP® column, eluting with a gradient of 40 to60% EtOAc in DCM). Fractions containing the product were combined andevaporated to afford Intermediate A24A (0.086 g, 43.3%) as an off-whitefoam. MS(ES): m/z=494.1 [M+H]⁺.

Intermediate A24B:2-(3-Chloro-4-fluorophenyl)-7-(morpholinomethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,2 TFA

To a solution of Intermediate A24A (0.086 g, 0.174 mmol) in DCM (1.74mL) was added TFA (0.134 mL, 1.741 mmol) and the reaction mixture wasstirred at room temperature for 1 h. It was then concentrated to drynessunder reduced pressure to afford crude Intermediate A24B (0.105 g, >99%)as the bis TFA salt. MS(ES): m/z=394.0.

Compounds A24 and A25:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(morpholinomethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A24B (0.054 g, 0.087 mmol) in DMF (0.87mL) was added DIPEA (0.091 mL, 0.521 mmol), followed by4-isocyanatobenzonitrile (0.038 g, 0.260 mmol) and the reaction mixturewas stirred at room temperature for 1 h. It was purified by preparativeHPLC to afford a racemic mixture of compounds A24 and A25. Theindividual enantiomers A24 and A25 were separated by chiral SFCpurification using CHIRALCEL® OD preparative column (21×250) mm, 10 μmcolumn, Solvent A: 0.1% diethylamine in heptane, Solvent B: 100% EtOH,start % B: 25, isocratic, flow rate 15.0 mL/min for 35 min. UV monitoredat 254 nm. Compound A24 (S)-isomer was eluted at 25.022 min. (9.7 mg,100% ee, Yield=20.56%) and Compound A25 (R)-isomer was eluted at 18.054min. (7.6 mg, 100% ee, Yield=15.94%). MS: m/z=538.2 [M+H]⁺; HPLC Ret.Time 1.57 min. and 2.46 min. (Methods H and I respectively); ¹H NMR (500MHz, DMSO-d₆) δ ppm 7.85 (dd, J=7.3, 1.8 Hz, 1H), 7.78-7.64 (m, 5H),7.48 (t, J=9.0 Hz, 1H), 7.41 (br. s., 1H), 7.25 (br. s., 1H), 5.20 (d,J=17.2 Hz, 1H), 4.71 (d, J=16.9 Hz, 1H), 4.61-4.50 (m, 1H), 4.45 (d,J=14.7 Hz, 1H), 3.85-3.71 (m, 1H), 3.55 (br. s., 4H), 2.83-2.74 (m, 2H),2.64-2.52 (m, 3H), 2.38-2.25 (m, 2H).

Intermediate A26A:5-(tert-Butoxycarbonyl)-3-carbamoyl-2-(3-chloro-4-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-7-carboxylicacid

To a solution of Intermediate A14H (2.0 g, 4.71 mmol) in DMF (47.1 mL)was added pyridinium dichromate (12.40 g, 33.0 mmol) and the reactionmixture was stirred at room temperature for 48 h. It was then dilutedwith water (250 mL) and extracted with EtOAc (3×50 mL) The combinedorganic layer was washed with water, brine, dried over anhydrous MgSO₄,filtered and the filtrate was concentrated under reduced pressure toafford crude Intermediate A26A (1.47 g, 71.2%) as a brown solid. MS(ES):m/z=439.3 [M+H]⁺.

Intermediate A26B: 5-tert-Butyl 7-methyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5,7(4H)-dicarboxylate

To a solution of crude Intermediate A26A (1.47 g, 3.35 mmol) in DCM(16.75 mL) and MeOH (16.75 mL) was added TMS-diazomethane (5.02 mL,10.05 mmol, 2M solution in THF) and the reaction mixture was stirred atroom temperature for 2 h. The mixture was then concentrated to drynessunder reduced pressure. The residue was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient of 45 to55% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A26B (0.9 g, 59.4%) as a whiteamorphous solid. MS(ES): m/z=451.3 [M−H]⁺.

Intermediate A26C: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-hydroxypropan-2-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a −78° C. solution of Intermediate A26B (0.9 g, 1.990 mmol) in THF(19.90 mL) was added a solution of methylmagnesium bromide (3.32 mL,9.95 mmol, 3M in hexanes) dropwise. The reaction mixture was graduallyallowed to attain room temperature and stirred for 16 h. It was quenchedwith a satd. aq. solution of NH₄Cl, the two layers were separated andthe aq. layer was extracted with EtOAc (2×60 mL). The combined organiclayer was washed with brine, dried over anhydrous MgSO₄, filtered andthe filtrate was concentrated under reduced pressure to give an oil. Itwas purified by silica gel chromatography (80 g REDISEP® column, elutingwith a gradient of 60 to 70% EtOAc in DCM). Fractions containing theproduct were combined and evaporated to afford Intermediate A26C (0.84g, 93%) as a yellow solid. (ES): m/z=453.08 [M+H]⁺.

Intermediate A26D:2-(3-Chloro-4-fluorophenyl)-7-(2-hydroxypropan-2-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

To a solution of Intermediate A26C (0.45 g, 0.994 mmol) in DCM (10.0 mL)was added TFA (1.53 mL, 19.87 mmol) and the reaction mixture was stirredat room temperature for 1 h. The volatiles were concentrated underreduced pressure and the residue was neutralized with a satd. aq.solution of NaHCO₃ and extracted with a 5% solution of MeOH in DCM (3×20mL). The combined organic layer was washed with brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated underreduced pressure to give Intermediate A26D (0.34 g, 96%) as a solid.(ES): m/z=375.02 [M+Na]⁺.

Compounds A26 and A27:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(2-hydroxypropan-2-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of Intermediate A26D (0.05 g, 0.142 mmol),4-isocyanatobenzonitrile (0.051 g, 0.354 mmol) and DIPEA (0.087 mL,0.496 mmol) in DMF (1.42 mL) was stirred at room temperature for 1 h.The reaction mixture was purified via preparative HPLC to afford aracemic mixture of Compounds A26 and A27. Individual enantiomers A26 andA27 were separated by chiral SFC separation using CHIRALPAK® IApreparative column (30×250) mm, 5 μm column, mobile phase: 40% MeOH inCO₂, back pressure 150 bar, temperature 35° C., flow rate 70.0 mL/minfor 16 min. UV monitored at 265 nm. Compound A26 (S)-isomer was elutedat 5.71 min. (13.5 mg, 100% ee, Yield=18.59%) and Compound A27(R)-isomer was eluted at 11.43 min. (13.6 mg, 100% ee, Yield=19.12%).MS(ES): m/z=497.4 [M+H]⁺; HPLC Ret. Time 1.50 min. and 2.41 min.(Methods H and I respectively); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.87 (d,J=7.3 Hz, 1H), 7.78-7.62 (m, 5H), 7.49 (t, J=9.0 Hz, 1H), 7.43 (br. s.,1H), 7.28 (br. s., 1H), 5.02 (d, J=16.9 Hz, 1H), 4.83 (d, J=16.9 Hz,1H), 4.43 (dd, J=13.9, 3.7 Hz, 1H), 4.26 (t, J=3.9 Hz, 1H), 3.71 (dd,J=14.1, 4.2 Hz, 1H), 3.37 (d, J=5.1 Hz, 1H), 1.32 (s, 3H), 1.08 (s, 3H).

Intermediate A28B:2-(3-Chloro-4-fluorophenyl)-N⁷-(tetrahydro-2H-pyran-4-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3,7-dicarboxamide,2 TFA

A solution of Intermediate A26A (0.103 g, 0.235 mmol),tetrahydro-2H-pyran-4-amine, HCl (0.13 g, 0.939 mmol), HATU (0.18 g,0.469 mmol) and DIPEA (0.164 mL, 0.939 mmol) in DMF (2.35 mL) wasstirred at room temperature for 16 h. The reaction mixture was dilutedwith water and extracted with EtOAc (3×10 mL). The combined organiclayer was washed with water, brine, dried over anhydrous MgSO₄, filteredand concentrated to afford the intermediate amide A28A. MS(ES):m/z=544.1 [M+Na]⁺. The crude product was subjected to deprotection ofthe Boc group without purification.

To a solution of Intermediate A28A in DCM (2 mL) was added TFA (0.27 mL,3.52 mmol) and the reaction mixture was stirred at room temperature for1 h. The mixture was then concentrated to dryness to afford crudeIntermediate A28B (0.15 g, >99%) as the bis TFA salt. MS(ES): m/z=422.0[M+H]⁺.

Compounds A28 and A29:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-N⁷-(tetrahydro-2H-pyran-4-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5,7(4H)-tricarboxamide

To a solution of Intermediate A28B (0.065 g, 0.100 mmol) in DMF (1.0 mL)was added DIPEA (0.087 mL, 0.500 mmol), followed by4-isocyanatobenzonitrile (0.036 g, 0.250 mmol) and the reaction mixturewas stirred at room temperature for 1 h. It was purified via preparativeHPLC to afford a racemic mixture of Compounds A28 and A29. Individualenantiomers A28 and A29 were separated by chiral SFC separation usingCHIRALPAK® IA preparative column (30×250) mm, 5 μm column, mobile phase:45% MeOH in CO₂, temperature 35° C., flow rate 70.0 mL/min for 23 min.UV monitored at 266 nm. Compound A28 (S)-isomer was eluted at 5.43 min.(5.1 mg, 100% ee, Yield=8.92%) and Compound A29 (R)-isomer was eluted at17.43 min. (5.0 mg, 100% ee, Yield=8.3%). MS(ES): m/z=566.3 [M+H]⁺; HPLCRet. Time 1.60 min. and 2.17 min. (Methods H and I respectively); ¹H NMR(500 MHz, DMSO-d₆) δ ppm 8.52 (d, J=7.7 Hz, 1H), 7.82 (dd, J=7.3, 1.8Hz, 1H), 7.74-7.57 (m, 5H), 7.47 (t, J=9.0 Hz, 1H), 7.40 (br. s., 1H),7.27 (br. s., 1H), 5.19 (d, J=17.2 Hz, 1H), 4.97 (br. s., 1H), 4.76 (d,J=17.2 Hz, 1H), 4.52-4.38 (m, 1H), 3.97 (d, J=10.3 Hz, 1H), 3.84-3.77(m, 1H), 3.75-3.60 (m, 2H), 3.41 (br. s., 1H), 3.37-3.27 (m, 1H),3.27-3.14 (m, 1H), 1.70 (d, J=12.5 Hz, 1H), 1.58 (d, J=12.5 Hz, 1H),1.50-1.28 (m, 2H).

Intermediate A30C:2-(3,4-Dichlorophenyl)-7-(fluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate A30C was synthesized analogous to Intermediate A14J byfirst coupling Intermediate A14G with 3,4-dichlorophenylboronic acid,followed by the synthetic sequence described in Scheme 42. MS(ES):m/z=343.1 [M+H]⁺.

Compounds A30 and A31:N⁵-(4-Cyanophenyl)-2-(3,4-dichlorophenyl)-7-(fluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of Intermediate A30C (0.05 g, 0.146 mmol),4-isocyanatobenzonitrile (0.052 g, 0.364 mmol) and DIPEA (0.076 mL,0.437 mmol) in DMF (1.46 mL) was stirred at room temperature for 1 h.The reaction mixture was purified by preparative HPLC to afford aracemic mixture of Compounds A30 and A31. The individual enantiomers A30and A31 were separated by chiral SFC purification using CHIRALPAK® IApreparative column (30×250) mm, 5 μm column, flow rate 70.0 mL/min for16 min.; mobile phase: 40% MeOH in CO₂. Temperature: 35° C., backpressure 150 bar, UV monitored at 265 nm, Back pressure: 150 bar.Compound A30 (S)-isomer was eluted at 9.23 min. (14.4 mg, 100% ee,Yield=20.28%) and Compound A31 (R)-isomer was eluted at 12.89 min. (14.0mg, 100% ee, Yield=19.72%). MS(ES): m/z=487.3 [M+H]⁺; HPLC Ret. Time1.62 min. and 2.49 min. (Methods H and I respectively); ¹H NMR (500 MHz,DMSO-d₆) δ ppm 7.89 (s, 1H), 7.77-7.59 (m, 6H), 7.42 (br. s., 1H), 7.38(br. s., 1H), 5.06 (d, J=5.9 Hz, 1H), 5.02-4.91 (m, 3H), 4.88 (d, J=12.1Hz, 1H), 4.78 (d, J=10.3 Hz, 1H), 4.68 (br. s., 1H), 4.63 (br. s., 1H),4.20-4.11 (m, 1H), 4.11-4.01 (m, 1H).

Intermediate A32C:2-(3,4-Dichlorophenyl)-7-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate A32C was synthesized from Intermediate A30A using asynthetic sequence analogous to the preparation of Intermediate A13C(Scheme 41). MS(ES): m/z=325.1 [M+H]⁺.

Compounds A32 and A33:N-(tert-Butyl)-2-(3,4-dichlorophenyl)-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

A solution of Intermediate A32C (0.05 g, 0.154 mmol),4-isocyanatobenzonitrile (0.057 g, 0.384 mmol) and DIPEA (0.08 mL, 0.461mmol) in DMF (1.54 mL) was stirred at room temperature for 1 h. Thereaction mixture was purified by preparative HPLC to afford a racemicmixture of Compounds A32 and A33. The individual enantiomers A32 and A33were separated by chiral SFC purification using CHIRALPAK® ADpreparative column (21×250) mm, 10 μm column, Solvent A: 0.1%diethylamine in heptane, Solvent B: 100% EtOH, start % B: 5.0,isocratic, flow rate 15.0 mL/min for 70 min. UV monitored at 254 nm.Compound A32 (S)-isomer was eluted at 38.833 min. (18.7 mg, 100% ee,Yield=25.9%) and Compound A33 (R)-isomer was eluted at 48.49 min. (18.3mg, 100% ee, Yield=25.4%). MS(ES): m/z=469.3; ¹H NMR (500 MHz, DMSO-d₆)δ ppm 7.79-7.62 (m, 6H), 7.43 (br. s., 1H), 7.33 (br. s., 1H), 4.99 (d,J=17.2 Hz, 1H), 4.86 (d, J=16.9 Hz, 1H), 4.54-4.40 (m, 1H), 4.12 (dd,J=13.9, 3.7 Hz, 1H), 3.72 (dd, J=14.1, 6.8 Hz, 1H), 3.38 (d, J=4.8 Hz,1H), 1.50 (d, J=6.2 Hz, 3H).

Intermediate A34D:2-(3,4-Dichlorophenyl)-7-(2-hydroxypropan-2-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide

Intermediate A34D was synthesized from Intermediate A30A using asynthetic sequence analogous to the preparation of Intermediate A26D(Scheme 45). MS(ES): m/z=369.1 [M+H]⁺.

Compounds A34 and A35:N⁵-(4-Cyanophenyl)-2-(3,4-dichlorophenyl)-7-(2-hydroxypropan-2-yl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

The racemic mixture of Compounds A34 and A35 was synthesized analogousto Compounds A26 and A27 (Scheme 45) by reacting Intermediate A34D with4-isocyanatobenzonitrile. The reaction mixture was purified viapreparative HPLC to afford a racemic mixture of Compounds A34 and A35.The individual enantiomers A34 and A35 were separated by chiral SFCseparation using CHIRALPAK® IA preparative column (30×250) mm, 5 μmcolumn, mobile phase: 40% MeOH in CO₂, temperature 35° C., back pressure150 bar, flow rate 70.0 mL/min for 25 min. UV monitored at 265 nm.Compound A34 (S)-isomer was eluted at 7.45 min. (13.4 mg, 100% ee,Yield=19.28%) and Compound A35 (R)-isomer was eluted at 18.57 min. (12.8mg, 100% ee, Yield=18.41%). MS(ES): m/z=513.3 [M+H]⁺; HPLC Ret. Time1.64 min. and 2.54 min. (Methods H and I respectively); ¹H NMR (500 MHz,DMSO-d₆) δ ppm 7.90 (s, 1H), 7.77-7.59 (m, 7H), 7.43 (br. s., 1H), 7.36(br. s., 1H), 5.01 (d, J=16.9 Hz, 1H), 4.81 (d, J=17.2 Hz, 1H), 4.43 (d,J=14.3 Hz, 1H), 4.27 (br. s., 1H), 3.69 (d, J=9.5 Hz, 1H), 1.32 (s, 3H),1.13-1.04 (m, 3H).

Intermediate A36A:(Z)-1-(3-Chloro-4-fluorophenyl)-4,4-diethoxy-3-hydroxybut-2-en-1-one

To a −78° C. solution of 1-(3-chloro-4-fluorophenyl)ethanone (16.25 g,94 mmol) and ethyl 2,2-diethoxyacetate (20.73 mL, 113 mmol) in THF (392mL) was added, dropwise, a solution of LDA (51.8 mL, 104 mmol, 2M inTHF). The resultant reaction mixture was gradually allowed to reach roomtemperature and continued stirring for 16 h. The reaction was carefullyquenched with water and diluted with EtOAc. The two layers wereseparated and the aq. layer was extracted with EtOAc (2×150 mL). Thecombined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate was concentrated under reduced pressureto provide a crude oil. It was purified by silica gel chromatography(1500 g Commodity column, eluting with a 10% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A36A (9.97 g, 35%) as a solid. MS(ES): m/z=257 [M−OEt]⁺.

Intermediate A36B:3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazole

To a solution of Intermediate A36A (19.37 g, 64.0 mmol) in EtOH (128 mL)was added hydrazine hydrate (4.9 mL, 64.0 mmol, 64% solution) and thereaction continued stirring at room temperature for 2 h. Ethanol wasconcentrated under reduced pressure and the residue was partitionedbetween water and EtOAc. The two layers were separated and the aq. layerwas extracted with EtOAc (2×200 mL). The combined organic layer waswashed with water, brine, dried over anhydrous MgSO₄, filtered and thefiltrate was concentrated under reduced pressure to provide a crude oil.It was purified by silica gel chromatography (330 g REDISEP® column,eluting with a gradient of 0 to 20% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A36B (17.08 g, 89%) as a bright yellow syrup that later onsolidified. MS(ES): m/z=253 [M−OEt]⁺; ¹H NMR (400 MHz, chloroform-d) δppm 7.87 (dd, J=7.0, 2.3 Hz, 1H), 7.68 (ddd, J=8.5, 4.6, 2.1 Hz, 1H),7.19 (t, J=8.7 Hz, 1H), 6.57 (s, 1H), 5.75 (s, 1H), 3.76-3.57 (m, 4H),1.35-1.24 (m, 7H).

Intermediate A36C:2-(3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazol-1-yl)acetonitrile

To a 0° C. solution of Intermediate A36B (1.21 g, 4.04 mmol) in DMF(10.22 mL) was added a solution of NHMDS (4.24 mL, 4.24 mmol, 1M in THF)and the reaction continued to stir at that temperature for 30 min.,followed by the addition of 2-chloroacetonitrile (0.283 mL, 4.44 mmol).The resultant mixture was stirred at room temperature for 16 h. It wasquenched by the addition of a satd. aq. solution of NH₄Cl and the aq.layer was extracted with EtOAc (3×25 mL). The combined organic layer waswashed with water, brine, dried over anhydrous MgSO₄, filtered, and thefiltrate was concentrated under reduced pressure to provide a crude oil.It was purified by silica gel chromatography (120 g REDISEP® column, 20%EtOAc in hexanes). Fractions containing the product were combined andevaporated to afford Intermediate A36C (1.0 g, 73.3%) as a white solid.MS(ES): m/z=338.2 [M+H]⁺.

Intermediate A36D:1-(3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazol-1-yl)-3-hydroxycyclobutanecarbonitrile

To a −78° C. solution of Intermediate A36C (0.5 g, 1.480 mmol) in THF(7.40 mL) was added a solution of methyllithium (0.925 mL, 1.48 mmol,1.6M in diethyl ether) dropwise and the reaction was allowed to stir atthat temperature for 1 h. Subsequently, a solution of2-(bromomethyl)oxirane (0.125 mL, 1.48 mmol) in THF (2 mL) wasintroduced dropwise. The reaction was allowed to stir at −78° C. for 1h. Then, a solution of methylmagnesium bromide (0.493 mL, 1.48 mmol, 3Min diethyl ether) was added at −78° C. and the resultant reactionmixture was allowed to warm to room temperature. After 16 h, thereaction was quenched by adding a satd. aq. solution of NH₄Cl, the twolayers were separated and the aq. layer was extracted with EtOAc (2×20mL). The combined organic layer was washed with brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated underreduced pressure to provide a crude oil. It was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient of 0 to20% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A36D (0.197 g, 33.8%) as a solid.MS(ES): m/z=394.1 [M+H]⁺.

Intermediate A36E:1-(3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazol-1-yl)-3-oxocyclobutanecarbonitrile

To a solution of Intermediate A36D (4.6 g, 11.68 mmol) in DCM (58.4 mL)was added Dess-Martin periodinane (7.43 g, 17.52 mmol) and the reactionmixture was stirred at room temperature for 2 h. It was then quenchedwith the addition of a satd. aq. solution of NaHCO₃ and a satd. aq.solution of sodium sulfite. The two layers were separated and the aq.layer was extracted with DCM (2×70 mL), the combined organic layers waswashed with brine, dried over anhydrous MgSO₄, filtered and the filtratewas concentrated under reduced pressure to provide a crude oil. It waspurified by silica gel chromatography (220 g REDISEP® column, elutingwith a gradient of 0 to 15% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A36E (3.98g, 87%) as a colorless syrup. MS(ES): m/z=392.1 [M+H]⁺.

Intermediate A36F:1-(3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazol-1-yl)-3,3-difluorocyclobutanecarbonitrile

To a 0° C. solution of Intermediate A36E (3.98 g, 10.16 mmol) in DCM(67.7 mL) was added DAST (4.03 mL, 30.5 mmol) and the reaction mixturewas stirred at room temperature for 18 h. It was quenched with a satd.aq. solution of NaHCO₃, the two layers were separated and the aq. layerwas extracted with DCM (2×60 mL). The combined organic layer was washedwith brine, dried over anhydrous MgSO₄, filtered and the filtrate wasconcentrated under reduced pressure to provide a crude oil. It waspurified by silica gel chromatography (220 g REDISEP® column, elutingwith a gradient of 10 to 15% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A36F (3.075g, 73.2%) as a pale yellow oil. MS(ES): m/z=414.17 [M+H]⁺.

Intermediate A36G:(1-(3-(3-Chloro-4-fluorophenyl)-5-(diethoxymethyl)-1H-pyrazol-1-yl)-3,3-difluorocyclobutyl)methanamine

To a 0° C. suspension of Intermediate A36F (3.075 g, 7.43 mmol) andcobalt(II) chloride (2.96 g, 22.29 mmol) in MeOH (74.3 mL) was slowlyadded NaBH₄ (2.81 g, 74.3 mmol). The reaction mixture instantly turnedblack and a vigorous gas evolution was observed. The reaction was heatedin an oil bath at 50° C. for 4 h and then allowed to stir at roomtemperature for 16 h. The reaction mixture was then filtered through aCELITE® plug and the filtrate was concentrated under reduced pressure toafford a residue. This residue was suspended in DCM and filtered off.The filtrate was concentrated and purified by silica gel chromatography(120 g REDISEP® column, eluting with a gradient of 65 to 75% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A36G (1.1 g, 35.4%) as a colorless oil. ¹H NMR(400 MHz, chloroform-d) δ ppm 7.86 (dd, J=7.2, 2.1 Hz, 1H), 7.65 (ddd,J=8.6, 4.6, 2.1 Hz, 1H), 7.17 (t, J=8.7 Hz, 1H), 6.70 (s, 1H), 5.61 (s,1H), 3.75-3.45 (m, 7H), 3.21 (s, 2H), 3.01 (ddd, J=15.4, 13.1, 4.9 Hz,2H), 1.27 (t, J=7.0 Hz, 6H).

Intermediate A36H:2′-(3-Chloro-4-fluorophenyl)-3,3-difluoro-6′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]

To a solution of Intermediate A36G (1.017 g, 2.434 mmol) in THF (24.34mL) was added a conc. aqueous solution of HCl (0.61 mL, 7.30 mmol). Aprecipitate formed and the reaction continued to stir at roomtemperature for 2 h. The solvent was evaporated and the aq. residue wasbasified with a satd. aq. solution of NaHCO₃ and extracted with EtOAc(3×25 mL). The combined organic layer was washed with brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated underreduced pressure to afford crude Intermediate A36H (0.79 g, 100%) as awhite solid. MS(ES): m/z=326.0 [M+H]⁺.

Intermediate A36I:2′-(3-Chloro-4-fluorophenyl)-3,3-difluoro-5′,6′-dihydro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]

To a solution of Intermediate A36H (0.79 g, 2.425 mmol) in EtOH (24.25mL) and THF (24.25 mL) was added NaBH₄ (0.459 g, 12.13 mmol) at roomtemperature and the reaction mixture was stirred for 16 h. It wasdiluted with water and extracted with DCM (3×25 mL). The combinedorganic layer was washed with brine, dried over anhydrous MgSO₄,filtered and the filtrate was concentrated under reduced pressure. Itwas purified by silica gel chromatography (12 g REDISEP® column, elutingwith a gradient of 55 to 100% EtOAc in hexanes). Fractions containingthe product were combined and evaporated to afford Intermediate A36I(0.139 g, 17.49%) as a white solid. MS(ES): m/z=328.1 [M+H]⁺.

Intermediate A36J: tert-Butyl2′-(3-chloro-4-fluorophenyl)-3,3-difluoro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A36I (0.137 g, 0.418 mmol) in DCM (4.18mL) were added TEA (0.175 mL, 1.254 mmol), DMAP (5.11 mg, 0.042 mmol)and Boc₂O (0.109 g, 0.502 mmol) and the reaction mixture was stirred for16 h. It was quenched by adding a satd. aq. solution of NaHCO₃, the twolayers were separated and the aq. layer was extracted with DCM (2×10mL). The combined organic layer was washed with brine, dried overanhydrous MgSO₄, filtered and the filtrate was concentrated underreduced pressure. It was purified by silica gel chromatography (24 gREDISEP® column, eluting with 21% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A36J (0.14 g, 78%) as a white solid. MS(ES): m/z=428.1[M+H]⁺.

Intermediate A36K: tert-Butyl2′-(3-chloro-4-fluorophenyl)-3,3-difluoro-3′-iodo-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A36J (0.14 g, 0.327 mmol) in DCM (2.62 mL)and MeOH (0.654 mL) was added NIS (0.221 g, 0.982 mmol) and the reactionmixture continued to stir at room temperature for 3 h. It was thenconcentrated under reduced pressure and the residue was purified bysilica gel chromatography (24 g REDISEP® column, eluting with 18% EtOAcin hexanes). Fractions containing the product were combined andevaporated to afford Intermediate A36K (0.179 g, 100%) as a white foam.MS(ES): m/z=554.0 [M+H]⁺.

Intermediate A36L: tert-Butyl2′-(3-chloro-4-fluorophenyl)-3′-cyano-3,3-difluoro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a degassed solution of Intermediate A36K (0.148 g, 0.267 mmol) in DMF(5.35 mL) was added copper(I) cyanide (0.061 g, 0.668 mmol) and themixture was degassed again for 5 min. with N₂ and then heated in asealed tube in an oil bath at 120° C. for 20 h. The reaction mixture wasfiltered and the filtrate concentrated under reduced pressure to afforda crude residue, which was purified by silica gel chromatography (12 gREDISEP® column, eluting with 30% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A36L (0.095 g, 52.59%) as an off-white solid. MS(ES):m/z=478.3 [M+Na]⁺.

Intermediate A36M: tert-Butyl3′-carbamoyl-2′-(3-chloro-4-fluorophenyl)-3,3-difluoro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To an ice-cold solution of Intermediate A36L (0.095 g, 0.210 mmol) inDMSO (2.1 mL) was added a 5M aq. solution of KOH (0.21 mL, 1.049 mmol),followed by the dropwise addition of a 30% aq. solution of H₂O₂(0.429mL, 4.20 mmol). The reaction mixture was stirred at room temperature for1 h. It was then diluted with water and extracted with EtOAc (2×10 mL).The combined organic layer was washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate was concentrated under reduced pressureto give a yellow oil. It was purified by silica gel chromatography (12 gREDISEP® column, eluting with 30% EtOAc in DCM). Fractions containingthe product were combined and evaporated to afford Intermediate A36M(0.073 g, 73.9%) as a white solid. MS(ES): m/z=471.1 [M+H]⁺.

Intermediate A36N:2′-(3-Chloro-4-fluorophenyl)-3,3-difluoro-5′,6′-dihydro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-3′-carboxamide,TFA

To a solution of Intermediate A36M (0.073 g, 0.155 mmol) in DCM (1.55mL) was added TFA (0.24 mL, 3.10 mmol) and the reaction mixturecontinued to stir at room temperature for 2 h. It was then concentratedto dryness and the residue was dried under vacuum for 20 min. to affordcrude Intermediate A36N (0.073 g, >99%) as the mono TFA salt.

Compound A36:2′-(3-Chloro-4-fluorophenyl)-N^(5′)-(4-cyanophenyl)-3,3-difluoro-4′H-spiro[cyclobutane-1,7′-pyrazolo[1,5-a]pyrazine]-3′,5′(6′H)-dicarboxamide

To a solution of Intermediate A36N (0.037 g, 0.076 mmol) and DIPEA(0.067 mL, 0.382 mmol) in DMF (1.0 mL) was added4-isocyanatobenzonitrile (0.022 g, 0.153 mmol) and the reaction mixturecontinued to stir at room temperature for 2 h. It was then purified bypreparative HPLC to afford Compound A36 (16.9 mg, 42.6%). MS(ES):m/z=515.3 [M+H]⁺; HPLC Ret. Time 1.89 min. and 2.77 min. (HPLC Methods Hand I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.89 (d, J=5.9 Hz, 1H),7.77-7.68 (m, 3H), 7.65 (d, J=8.8 Hz, 2H), 7.54-7.39 (m, 2H), 7.32 (br.s., 1H), 5.01 (s, 2H), 4.24-4.16 (m, 1H), 4.14 (s, 2H), 3.40 (d, J=14.7Hz, 2H), 3.12-2.99 (m, 2H).

Intermediate A37A: Di-tert-butyl (3-bromo-4-cyanophenyl)carbamate

To a solution of 4-amino-2-bromobenzonitrile (4.68 g, 23.75 mmol) in THF(60 mL) were added TEA (6.62 mL, 47.5 mmol), DMAP (0.290 g, 2.375 mmol),and BOC-anhydride (5.63 mL, 24.23 mmol). The reaction mixture wasallowed to stir at RT overnight. It was concentrated and the residue waspurified by silica gel chromatography (80 g REDISEP® column, elutingwith a gradient from 0-15% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A37A (3.8 g,40.3%). MS(ES): m/z=420.8 [M+Na]⁺; aH NMR (400 MHz, chloroform-d) δ ppm7.71-7.53 (m, 2H), 7.50 (d, J=1.5 Hz, 1H), 1.48 (s, 18H).

Intermediate A37B: 4-Amino-2-morpholinobenzonitrile

To a vial were added Intermediate A37A (300 mg, 0.755 mmol), morpholine(132 mg, 1.510 mmol), sodium tert-butoxide (109 mg, 1.133 mmol),Pd₂(dba)₃ (69.2 mg, 0.076 mmol), XantPhos (87 mg, 0.151 mmol), anddioxane (8 mL). The reaction mixture was purged with nitrogen for 5 min.and capped. It was heated at 105° C. for 5 h. The reaction mixture wascooled to RT and diluted with equal parts water and DCM. The organiclayer was separated and the aqueous layer was extracted twice more withDCM. The combined organic layer was washed with brine, dried overNa₂SO₄, and filtered. The filtrate was concentrated. The crude materialwas dissolved in DCM (15 mL) and treated with TFA (3 mL). The reactionmixture was stirred at RT overnight and concentrated. The residue wasdiluted with 20% MeOH in CHCl₃ and carefully quenched with a saturatedaq. NaHCO₃ solution. The organic layer was separated and the aqueouslayer was extracted twice more with CHCl₃. The combined organic layerwas washed with brine, dried over Na₂SO₄, and filtered. The filtrate wasconcentrated. The crude product was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient from30-80% EtOAc in hexane). Fractions containing the product were combinedand evaporated to afford Intermediate A37B (62 mg, 40.5%). MS(ES):m/z=204.1 [M+H]⁺.

Intermediate A37D: 4-Amino-2-cyclopropylbenzonitrile

To a microwave vial were added cyclopropylboronic acid (441 mg, 5.14mmol), Intermediate A37A (510 mg, 1.284 mmol), THF (8 mL), a 2 M aq.solution of potassium hydroxide (2.57 mL, 5.14 mmol), and Pd(Ph₃P)₄ (148mg, 0.128 mmol). The reaction mixture was purged with nitrogen for 3min. and heated at 100° C. in a microwave for 2 h. The reaction mixturewas cooled to RT and diluted with equal parts water and DCM. The organiclayer was separated and the aqueous layer was extracted twice more withDCM. The combined organic layer was washed with brine, dried overNa₂SO₄, and filtered. The filtrate was concentrated to afford crudeIntermediate A37C which was used as such without further purification.

To a solution of crude Intermediate A37C in DCM (15 mL) was added TFA (6mL). The reaction mixture was stirred at RT overnight and concentrated.The residue was purified by preparative HPLC. Fractions containing theproduct were combined and evaporated to afford Intermediate A37D (84 mg,41.4%). MS(ES): m/z=159.2 [M+H]⁺. ¹H NMR (400 MHz, methanol-d₄)) δ ppm7.22 (d, J=8.3 Hz, 1H), 6.54 (d, J=1.5 Hz, 1H), 6.39 (dd, J=8.0, 1.5 Hz,1H), 1.91-1.74 (m, 1H), 1.06-0.94 (m, 2H), 0.80-0.63 (m, 2H).

Compound A37:2-(3-Chlorophenyl)-N-(4-cyano-3-morpholinophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of triphosgene (25 mg, 0.084 mmol) in THF (2 mL) cooled to0° C. was added a solution of Intermediate A37B (35 mg, 0.172 mmol) andTEA (0.096 mL, 0.689 mmol) in THF (2 mL). The resulting suspension wasallowed to stir at 0° C. for 30 min. prior to the addition of a solutionof Intermediate 156E (42.9 mg, 0.155 mmol) in DMF (1 mL). The reactionmixture was stirred at RT overnight and diluted with equal parts waterand DCM. The organic layer was separated and the aqueous layer wasextracted twice more with DCM. The combined organic layer was washedwith brine, dried over Na₂SO₄, and filtered. The filtrate wasconcentrated to afford the crude material which was purified bypreparative HPLC. Fractions containing the desired product were combinedand dried under vacuum to afford Compound A37 (8.2 mg, 9.4%). MS(ES):m/z=506.3 [M+H⁺; HPLC Ret. Time 1.57 min. and 2.17 min. (HPLC Methods Hand I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 9.09 (s, 1H), 7.73 (s, 1H), 7.66(d, J=7.0 Hz, 1H), 7.54 (d, J=8.8 Hz, 1H), 7.50-7.42 (m, 2H), 7.39 (br.s., 1H), 7.20 (br. s., 1H), 6.90 (s, 1H), 6.84 (d, J=8.8 Hz, 1H), 4.91(s, 2H), 4.25 (br. s., 2H), 4.01 (br. s., 2H), 3.73 (br. s., 4H), 3.28(m., 3H), 3.34 (br. s., 1H).

The Compounds described in Table 34 were synthesized analogous toCompound A37 by reacting Intermediate 156E with corresponding amines.

TABLE 34 Ret Ex. Time HPLC No. Structure Name [M + H]⁺ (min.) Method A38

2-(3-Chlorophenyl)-N⁵- (4-cyano-3- methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 435.4 1.46 2.42 HI A39

2-(3-Chlorophenyl)-N⁵- (4-cyano-3- (trifluoromethoxy) phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 505.4 1.68 2.59 HI A40

2-(3-Chlorophenyl)-N⁵- (4-cyano-3- methoxyphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.5 1.44 2.35 HI A41

2-(3-Chlorophenyl)-N⁵- (4-cyano-3- cyclopropylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 460.2 1.78 2.33 HI A42

N⁵-(3-(tert-Butyl)-4- cyanophenyl)-2-(3- chlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 477.5 1.68 2.64 HI A43

N⁵-(4-(1H-Imidazol-1- yl)phenyl)-2-(3- chlorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 496.2 1.94 2.51 HI A44

2-(3-Chlorophenyl)-N⁵- (4-(oxazol-2-yl)phenyl)- 6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)- dicarboxamide 463.3 1.48 2.33 H I A45

2-(3-Chlorophenyl)-N⁵- (1,1-dioxidobenzo[b] thiophen-6-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 484.1 1.59 2.09 HI A46

2-(3-Chlorophenyl)-N⁵- (4-(2-methylthiazol-4- yl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 467.2 1.46 2.36 HI A47

2-(3-Chlorophenyl)-N⁵- (4-(2-methyloxazol-5- yl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.2 1.41 2.24 HI

The Compounds described in Table 35 were synthesized analogous toCompound A37 by reacting Intermediate 172B with corresponding amines.

TABLE 35 Ret Ex. Time HPLC No. Structure Name [M − H]⁺ (min.) Method A48

2-(3-Chloro-4-fluorophenyl)- N⁵-(4-cyano-3-methylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 453.2 1.892.44 H I A49

2-(3-Chloro-4-fluorophenyl)- N⁵-(4-cyano-3- morpholinophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 524.2 1.42 2.43 HI A50

2-(3-Chloro-4-fluorophenyl)- N⁵-(4-cyano-3- cyclopropylphenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 479.3 1.57 2.43 HI A51

N⁵-(3-(tert-Butyl)-4- cyanophenyl)-2-(3-chloro-4- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 495.3 1.95 2.63 HI A52

2-(3-Chloro-4-fluorophenyl)- N⁵-(1,1-dioxidobenzo[b] thiophen-6-yl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 503.3 1.43 2.17 HI A53

2-(3-Chloro-4-fluorophenyl)- N⁵-(4-(2-methylthiazol-4- yl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 485.4 1.51 2.43 HI A54

2-(3-Chloro-4-fluorophenyl)- N⁵-(4-(1-cyanocyclopropyl)phenyl)-6,7-dihydropyrazolo [1,5-a]pyrazine-3,5(4H)- dicarboxamide 479.21.56 2.36 H I

The Compounds described in Table 36 were synthesized analogous toCompound A37 by reacting Intermediate 185A with corresponding amines.

TABLE 36 Ret Ex. Time HPLC No. Structure Name [M − H]⁺ (min.) Method A55

N⁵-(4-Cyano-3- methylphenyl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 419.3 1.62 2.18 HI A56

2-(3- Fluorophenyl)-N⁵-(4-(2- methylthiazol- 4-yl)phenyl)- 6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 451.3 1.36 2.21 HI A57

N⁵-(1,1-Dioxidobenzo[b] thiophen-6-yl)-2-(3- fluorophenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 468.2 1.23 1.91 HI A58

2-(3- Fluorophenyl)-N⁵-(4-(2- methyloxazol- 5-yl)phenyl)- 6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 435.4 1.15 2.09 HI A59

2-(3-Fluorophenyl)-N⁵-(4- (oxazol-2-yl)phenyl)-6,7-dihydropyrazolo[1,5-a] pyrazine-3,5(4H)- dicarboxamide 447.3 1.32 2.19 HI

Intermediate A60A: tert-Butyl3-carbamoyl-2-(3-chloro-5-ethoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a vial were added (3-chloro-5-ethoxyphenyl)boronic acid (61 mg, 0.304mmol), Intermediate 156C (119 mg, 0.304 mmol), a 2 M aq. solution ofK₃PO₄ (0.46 mL, 0.913 mmol), dioxane (6 mL), and PdCl₂(dppf) (22.27 mg,0.030 mmol). The reaction mixture was purged with nitrogen for 1 min.and then heated at 80° C. overnight. The reaction mixture was dilutedwith equal parts of water and DCM. The organic layer was separated andthe aqueous layer was extracted twice more with DCM. The combinedorganic layer was washed with brine, dried over Na₂SO₄, and filtered.The filtrate was concentrated. The residue was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient from20-80% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A60A (62 mg, 40.5%). MS(ES):m/z=421.2 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d)) δ ppm 7.16 (t, J=1.6Hz, 1H), 7.00 (d, J=1.8 Hz, 2H), 4.99 (s, 2H), 4.23 (t, J=5.3 Hz, 2H),4.07 (q, J=7.0 Hz, 2H), 3.96 (t, J=5.3 Hz, 2H), 1.53 (s, 9H), 1.44 (t,J=7.0 Hz, 3H).

Compound A60:2-(3-Chloro-5-ethoxyphenyl)-N-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A60A (60 mg, 0.143 mmol) in DCM (10 mL)was added TFA (1 mL, 12.98 mmol). The reaction mixture was then allowedto stir at RT overnight prior to the removal of the volatiles to affordcrude Intermediate A60B as a TFA salt. The TFA salt was then dissolvedin DMF (1 mL) and treated with DIPEA (0.018 mL, 0.115 mmol). Theresulting mixture was allowed to stir for 5 min. prior to the additionof 4-isocyanatobenzonitrile (8.29 mg, 0.057 mmol). The reaction mixturewas stirred for 1 h, after which it was filtered and purified bypreparative HPLC. Fractions containing the desired product were combinedand dried under vacuum to afford Compound A60 (5.8 mg, 21.7%). MS(ES):m/z=463.3 [M−H]⁺; HPLC Ret. Time 1.71 min. and 2.53 min. (HPLC Methods Hand I); ¹H NMR (500 MHz, DMSO-d₆)) δ ppm 7.78-7.64 (m, 4H), 7.29 (s,2H), 7.22 (s, 2H), 7.01 (s, 1H), 4.90 (s, 2H), 4.25 (br. s., 2H), 4.07(q, J=7.0 Hz, 2H), 4.00 (br. s., 2H), 3.37 (d, J=8.8 Hz, 2H), 3.18 (d,J=4.4 Hz, 1H), 1.34 (t, J=6.8 Hz, 3H).

Compound A61:N⁵-(3-Chloro-4-cyanophenyl)-2-(3-chloro-5-ethoxyphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of triphosgene (23.13 mg, 0.078 mmol) in THF (4 mL) wasadded a solution of 4-amino-2-chlorobenzonitrile (11.89 mg, 0.078 mmol)and TEA (0.043 mL, 0.312 mmol) in THF (1 mL) at 0° C. The reactionmixture was allowed to stir at 0° C. for 30 min. prior to the additionof a solution of Intermediate A60B (25 mg, 0.078 mmol) in DMF (1 ML).The reaction mixture was stirred for 1 h after which it was filtered andpurified by preparative HPLC. Fractions containing the desired productwere combined and dried under vacuum to afford Compound A61 (26.5 mg,68.1%). MS(ES): m/z=497.3 [M−H]⁺; HPLC Ret. Time 1.72 min. and 2.62 min.(HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 9.57 (s, 1H),7.91 (d, J=1.8 Hz, 1H), 7.85 (d, J=8.8 Hz, 1H), 7.61 (dd, J=8.8, 1.8 Hz,1H), 7.29 (s, 1H), 7.27-7.15 (m, 2H), 7.08-6.95 (m, 1H), 4.91 (s, 2H),4.44-4.21 (m, 2H), 4.15-3.92 (m, 4H), 1.34 (t, J=7.0 Hz, 3H).

Compound A62:2-(3-Chloro-5-methylphenyl)-N⁵-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound A62 was synthesized analogous to Compound A60 by reactingdeprotected A62A with 4-isocyanatobenzonitrile. The compound waspurified by preparative HPLC. MS(ES): m/z=433.3 [M−H]⁺; HPLC Ret. Time1.65 min. and 2.51 min. (HPLC Methods H and I). ¹H NMR (500 MHz,DMSO-d₆)) δ ppm 7.78-7.59 (m, 4H), 7.51 (s, 1H), 7.46 (s, 1H), 7.38 (br.s., 1H), 7.27 (s, 1H), 7.21 (br. s., 1H), 4.90 (s, 2H), 4.24 (br. s.,2H), 4.01 (br. s., 2H), 2.34 (s, 3H).

Compound A63:N⁵-(3-Chloro-4-cyanophenyl)-2-(3-chloro-5-methylphenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound A63 was synthesized analogous to Compound A61 by reactingdeprotected A62A with 4-amino-2-chlorobenzonitrile. The compound waspurified by preparative HPLC. MS(ES): m/z=467.2 [M−H]⁺; HPLC Ret. Time2.07 min. and 2.71 min. (HPLC Methods H and I). ¹H NMR (500 MHz,DMSO-d₆) δ ppm 9.58 (s, 1H), 7.91 (s, 1H), 7.85 (d, J=8.8 Hz, 1H), 7.61(d, J=8.8 Hz, 1H), 7.51 (s, 1H), 7.47 (s, 1H), 7.40 (br. s., 1H), 7.28(s, 1H), 7.18 (br. s., 1H), 4.91 (s, 2H), 4.25 (t, J=5.0 Hz, 2H),4.07-3.93 (m, 2H), 2.35 (s, 3H).

Intermediate A64A:2-(3-Chloro-4-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

A suspension of Intermediate 172A (700 mg, 2.375 mmol) in a concentratedaq. solution of HCl (6 mL) was heated at 100° C. for 2 h and it became asolution. The reaction mixture was cooled to RT and treated with 1 NNaOH to PH 7. The resulting precipitate was collected by filtration,washed with water, and dried with vacuum to afford Intermediate A64A(250 mg, 35.6%) as a white powder. MS(ES): m/z=296.0 [M+H]⁺.

Intermediate A64B:2-(3-Chloro-4-fluorophenyl)-5-((4-cyanophenyl)carbamoyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylicacid

To a solution of Intermediate A64A (80 mg, 0.195 mmol) in DMF (3 mL) wasadded Hunig's base (0.068 mL, 0.391 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition of4-isocyanatobenzonitrile (28.1 mg, 0.195 mmol). The reaction mixture wasallowed to stir at RT for 2 h after which it was filtered and purifiedby preparative HPLC. Fractions containing the desired product werecombined and dried under vacuum to afford Intermediate 28B (50 mg, 58%).MS(ES): m/z=440.1 [M+H]⁺.

Compound A64:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-N3-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A64B (25 mg, 0.045 mmol) in DMF (1 mL)were added methylamine HCl salt (6.10 mg, 0.090 mmol), Hunig's base(0.032 mL, 0.181 mmol), and HATU (34.3 mg, 0.090 mmol). The reactionmixture was allowed stir at RT for 4 h after which it was filtered andpurified by preparative HPLC. Fractions containing the desired productwere combined and dried under vacuum to afford Compound A64 (10 mg,48.9%). MS(ES): m/z=451.4 [M−H]⁺; HPLC Ret. Time 1.55 min. and 2.43 min.(HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.87-7.77 (m,2H), 7.77-7.59 (m, 6H), 7.47 (t, J=9.0 Hz, 1H), 4.88 (s, 2H), 4.25 (br.s., 2H), 4.01 (br. s., 2H), 3.35 (s, 3H).

Compound A65:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-N³-cyclopropyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compound A65 was synthesized analogous to Compound A64 by reactingIntermediate A64B with cyclopropylamine. The compound was purified bypreparative HPLC. MS(ES): m/z=477.4 [M−H]⁺; HPLC Ret. Time 1.64 min. and2.51 min. (HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 9.41(s, 1H), 8.02 (d, J=3.7 Hz, 1H), 7.78 (d, J=7.3 Hz, 1H), 7.75-7.59 (m,5H), 7.47 (t, J=9.0 Hz, 1H), 4.84 (s, 2H), 4.24 (br. s., 2H), 4.00 (br.s., 2H), 2.79 (d, J=3.3 Hz, 1H), 0.68 (d, J=5.5 Hz, 2H), 0.46 (br. s.,2H).

Intermediate A66B: Methyl4-((tert-butoxycarbonyl)amino)-3-hydroxybutanoate

To a suspension of 4-amino-3-hydroxybutanoic acid (17.8 g, 149 mmol) inMeOH (150 mL) and DMF (2 mL) at 0° C. was added SOCl₂ (23.99 mL, 329mmol) dropwise via a dropping funnel. The reaction mixture graduallybecame a clear solution. It was stirred at RT for 30 min. and thenheated at 60° C. for 2 h. The reaction mixture was cooled to RT andconcentrated. The residue was suspended in dioxane (150 mL) and added toa saturated aq. solution of sodium bicarbonate (74.7 mL, 149 mmol).BOC-anhydride (41.6 mL, 179 mmol) was added. The reaction mixture wasstirred at RT overnight after which it was diluted with equal partswater and EtOAc. The organic layer was separated and the aqueous layerwas extracted twice more with EtOAc. The combined organic layer waswashed with brine, dried over Na₂SO₄, and filtered. The filtrate wasconcentrated. The crude product was purified by silica gelchromatography (330 g REDISEP® column, eluting with a gradient from30-70% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A66B (25 g, 71.7% for two steps).¹H NMR (400 MHz, chloroform-d) δ ppm 4.22-4.04 (m, 1H), 3.74 (s, 3H),3.51 (d, J=7.5 Hz, 1H), 3.20-3.08 (m, 1H), 2.57-2.48 (m, 2H), 1.52-1.40(m, 9H).

Intermediate A66C: tert-Butyl (2,4-dihydroxybutyl)carbamate

To a solution of Intermediate A66B (25 g, 107 mmol) in diethyl ether(200 mL) and MeOH (7.59 mL, 188 mmol) at 0° C. was added LiBH₄ (3.50 g,161 mmol) in portions carefully. The reaction was stirred at RT for 1 hand heated at 60° C. for 1 h. The reaction was carefully quenched withMeOH and concentrated. The residue was diluted with equal parts of asaturated aq. NH₄Cl solution and EtOAc. The organic layer was separatedand the aqueous layer was extracted twice more with EtOAc. The combinedorganic layer was washed with brine, dried over Na₂SO₄, and filtered.The filtrate was concentrated to afford Intermediate A66C (19 g, 86%) asan off-white solid. It was used as such without further purification. ¹HNMR (400 MHz, chloroform-d) δ ppm 4.03-3.77 (m, 3H), 3.30 (ddd, J=14.1,6.1, 3.1 Hz, 1H), 3.22-3.03 (m, 1H), 1.78-1.65 (m, 2H), 1.46 (s, 9H).

Intermediate A66D: tert-Butyl(4-((tert-butyldimethylsilyl)oxy)-2-hydroxybutyl) carbamate

To a solution of Intermediate A66C (10 g, 48.7 mmol) and TEA (2.55 mL,18.30 mmol) in DCM (80 mL) were added TBS-Cl (8.08 g, 53.6 mmol) andDMAP (0.060 g, 0.487 mmol). It was allowed to stir at RT for 4 h. Thereaction mixture was diluted with equal parts water and EtOAc. Theorganic layer was separated and the aqueous layer was extracted twicemore with EtOAc. The combined organic layer was washed with brine, driedover Na₂SO₄, and filtered. The filtrate was concentrated. The residuewas purified by silica gel chromatography (240 g REDISEP® column,eluting with a gradient from 10-50% EtOAc in hexane). Fractionscontaining the product were combined and evaporated to affordIntermediate A66D (12 g, 77%). ¹H NMR (400 MHz, chloroform-d) δ ppm3.99-3.72 (m, 3H), 3.41-3.22 (m, 1H), 3.22-3.03 (m, 1H), 1.78-1.60 (m,2H), 1.46 (s, 9H), 0.96-0.84 (m, 9H), 0.19-0.06 (m, 6H).

Intermediate A66E: Ethyl 4-(3-chloro-4-fluorophenyl)-2,4-dioxobutanoate

Intermediate A66E was prepared analogous to Intermediate A1C by reacting1-(3-chloro-4-fluorophenyl)ethanone with diethyl oxalate. MS(ES):m/z=273.1 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 8.10 (dd, J=6.9,2.1 Hz, 1H), 7.93 (ddd, J=8.8, 4.5, 2.3 Hz, 1H), 7.36-7.20 (m, 1H),7.13-6.95 (m, 1H), 4.44 (q, J=7.3 Hz, 2H), 1.45 (t, J=7.2 Hz, 3H).

Intermediate A66F: Ethyl3-(3-chloro-4-fluorophenyl)-1H-pyrazole-5-carboxylate

Intermediate A66F was prepared analogous to Intermediate A1D by reactingIntermediate A66E with hydrazine hydrate. MS(ES): m/z=269.1 [M+H]⁺; ¹HNMR (400 MHz, chloroform-d) δ ppm 7.91 (dd, J=7.0, 2.0 Hz, 1H), 7.70(ddd, J=8.5, 4.5, 2.3 Hz, 1H), 7.22 (t, J=8.7 Hz, 1H), 7.11 (s, 1H),4.45 (q, J=7.2 Hz, 2H), 1.44 (t, J=7.2 Hz, 3H).

Intermediate A66G: Ethyl3-(3-chloro-4-fluorophenyl)-1-(2,2,3,3,12,12-hexamethyl-10-oxo-4,11-dioxa-9-aza-3-silatridecan-7-yl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate A66F (10.7 g, 40 mmol) in THF (100 mL) at0° C. were added Intermediate A66D (15.25 g, 48 mmol), TEA (5.6 mL, 40mmol), triphenylphosphine (10.5 g, 40 mmol), and DTBAD (9.17 g, 40mmol). The reaction mixture was stirred at RT for 2 h and concentrated.The residue was diluted with equal parts of water and EtOAc. The organiclayer was separated and the aqueous layer was extracted twice more withEtOAc. The combined organic layer was washed with brine, dried overNa₂SO₄, and filtered. The filtrate was concentrated. The crude productwas purified by silica gel chromatography (330 g REDISEP® column,eluting with a gradient from 10-40% EtOAc in hexane). Fractionscontaining the product were combined and evaporated to affordIntermediate A66G (16.5 g, 73%). MS(ES): m/z=592.3 [M+Na]⁺.

Intermediate A66H: Ethyl1-(1-amino-4-hydroxybutan-2-yl)-3-(3-chloro-4-fluorophenyl)-1H-pyrazole-5-carboxylatebis HCl salt

To a solution of Intermediate A66G (6.1 g, 10.70 mmol) in DMC (120 mL)was added 4 M HCl solution in dioxane (10.70 mL, 42.8 mmol). Thereaction mixture was allowed to stir at RT overnight. The precipitatedIntermediate A66H was collected by filtration. It was used as suchwithout further purification. MS(ES): m/z=356.1 [M+H]⁺.

Intermediate A66I:2-(3-Chloro-4-fluorophenyl)-7-(2-hydroxyethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a suspension of Intermediate A66H (4.20 g, 10.7 mmol) in ethanol (80mL) was added 30% water solution of ammonia (80 mL, 3697 mmol). It wasstirred at RT for 2 h and concentrated. The solid was collected byfiltration, washed with water, and dried. The crude Intermediate A66Iwas used as such without further purification. MS(ES): m/z=310.0 [M+H]⁺;¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.27 (br. s., 1H), 8.07 (dd, J=7.3, 2.3Hz, 1H), 7.89 (ddd, J=8.7, 4.8, 2.1 Hz, 1H), 7.48 (t, J=9.0 Hz, 1H),7.34 (s, 1H), 4.74 (t, J=5.0 Hz, 1H), 4.67-4.47 (m, 1H), 3.79 (ddd,J=13.3, 4.4, 2.4 Hz, 1H), 3.66-3.55 (m, 2H), 3.50 (ddd, J=13.4, 5.6, 3.4Hz, 1H), 2.17 (dd, J=13.8, 6.0 Hz, 1H), 2.03-1.81 (m, 1H).

Intermediate A66J:7-(2-((tert-Butyldimethylsilyl)oxy)ethyl)-2-(3-chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a suspension of Intermediate A66I in DCM (300 mL) and DMF (15 mL)were added TEA (10.80 mL, 77 mmol), TBS-C1 (9.34 g, 62.0 mmol), and DMAP(0.316 g, 2.58 mmol). The suspension was allowed to stir at RTovernight. The reaction mixture was diluted with equal parts water andDCM. The organic layer was separated and the aqueous layer was extractedtwice more with DCM. The organic layer was washed with brine, dried overNa₂SO₄, and filtered. The filtrate was concentrated. The crude productwas purified by silica gel chromatography (330 g REDISEP® column,eluting with a gradient from 0-40% EtOAc in DMC). Fractions containingthe product were combined and evaporated to afford Intermediate A66J(17.8 g, 81%). MS(ES): m/z=446.2 [M+Na]⁺. ¹H NMR (400 MHz, chloroform-d)δ ppm 7.91 (dd, J=7.2, 2.1 Hz, 1H), 7.66 (ddd, J=8.6, 4.6, 2.1 Hz, 1H),7.27-7.10 (m, 2H), 6.25 (br. s., 1H), 4.78-4.51 (m, 1H), 4.02-3.79 (m,3H), 3.72 (ddd, J=13.1, 5.5, 3.5 Hz, 1H), 2.47-2.23 (m, 1H), 2.23-1.96(m, 1H), 1.00-0.88 (m, 9H), 0.18-0.05 (m, 6H).

Intermediate A66K: tert-Butyl7-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-(3-chloro-4-fluorophenyl)-4-oxo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a suspension of Intermediate A66J (13.64 g, 32.2 mmol) in toluene(120 mL) were added DMAP (5.90 g, 48.3 mmol) and BOC-anhydride (8.96 mL,38.6 mmol). The reaction mixture was stirred at RT for 1 h and it becamea clear solution after 5 min. The reaction mixture was concentrated andthe residue was purified by silica gel chromatography (240 g REDISEP®column, eluting with a gradient from 0-40% EtOAc in DCM). Fractionscontaining the product were combined and evaporated to affordIntermediate A66K (17.8 g, 81%). MS(ES): m/z=524.4 [M+H]⁺; ¹H NMR (400MHz, chloroform-d) δ ppm 7.90 (dd, J=7.0, 2.0 Hz, 1H), 7.66 (ddd, J=8.5,4.6, 2.1 Hz, 1H), 7.29 (s, 1H), 7.25-7.03 (m, 2H), 4.84-4.63 (m, 1H),4.38-4.18 (m, 2H), 4.05-3.79 (m, 2H), 2.51-2.24 (m, 1H), 2.03 (dtd,J=14.4, 7.2, 2.3 Hz, 1H), 1.61 (s, 9H), 0.95 (s, 9H), 0.14 (s, 3H), 0.12(s, 3H).

Intermediate A66L: tert-Butyl7-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-(3-chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A66K (1.5 g, 2.86 mmol) in THF (15 mL) wasadded a 2 M solution of BH₃.Me₂S in THF (4.29 mL, 8.59 mmol) dropwise atRT. The reaction mixture was heated to reflux for 4 h and cooled to 0°C. It was carefully quenched with MeOH. The reaction mixture wasconcentrated. The residue was diluted with equal parts of a saturatedaq. NH₄Cl solution and EtOAc. The organic layer was separated and theaqueous layer was extracted twice more with EtOAc. The combined organiclayer was washed with brine, dried over Na₂SO₄, and filtered. Thefiltrate was concentrated to afford Intermediate A66L (1.2 g, 82%),which was used as such without further purification. MS(ES): m/z=510.3[M+H]⁺.

Intermediate A66M: tert-Butyl7-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-(3-chloro-4-fluorophenyl)-3-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A66L (3.53 g, 6.92 mmol) in DMC (25 mL)and MeOH (10 mL) was added NIS (1.868 g, 8.30 mmol). The reactionmixture was stirred at RT for 2 h and concentrated. The residue waspurified by silica gel chromatography (80 g REDISEP® column, elutingwith a gradient from 0-25% EtOAc in hexane). Fractions containing theproduct were combined and evaporated to afford Intermediate A66M (3 g,76%). MS(ES): m/z=636.2 [M+H]⁺.

Intermediate A66N: tert-Butyl7-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-(3-chloro-4-fluorophenyl)-3-cyano-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A66M (3 g, 4.72 mmol) in DMF (12 mL) wasadded copper(I) cyanide (1.056 g, 11.79 mmol). The reaction mixture waspurged with nitrogen for 2 min. and heated at 120 OC overnight. It wascooled to RT, diluted with EtOAc, passed through a pad of CELITE®. Thefilter cake was washed with EtOAc. The filtrate was concentrated. Theresidue was purified by silica gel chromatography (80 g REDISEP® column,eluting with a gradient from 0-35% EtOAc in hexane). Fractionscontaining the product were combined and evaporated to affordIntermediate 66N (1.2 g, 48%). MS(ES): m/z=557.2 [M+Na]⁺.

Intermediate A66O: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-hydroxyethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A66N (1.2 g, 2.242 mmol) in ethanol (10mL) and THF (10 mL) were added a 5 M aq. solution of potassium hydroxide(2.242 mL, 11.21 mmol) and H₂O₂(4.58 mL, 44.8 mmol). The reactionmixture was stirred at RT overnight and concentrated. The residue wasdiluted with equal parts water and EtOAc. The organic layer wasseparated and the aqueous layer was extracted twice more with EtOAc. Thecombined organic layer was washed with brine, dried over Na₂SO₄,filtered. The filtrate was concentrated to afford the crude IntermediateA66O (820 mg, 83%) as an off-white solid which was used as such withoutfurther purification. MS(ES): m/z=439.1 [M+H]⁺.

Intermediate A66P:2-(3-Chloro-4-fluorophenyl)-7-(2-hydroxyethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA salt

To a solution of Intermediate A66O (95 mg, 0.216 mmol) in DCM (10 mL)was added TFA (1 mL). The reaction mixture was stirred at RT for 6 h andconcentrated to afford the TFA salt of Intermediate A66P which was usedas such without further purification. MS(ES): m/z=339.1 [M+H]⁺.

Compounds A66 and A67:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(2-hydroxyethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A66P (35 mg, 0.093 mmol) in DMF (1 mL) wasadded Hunig's base (0.033 mL, 0.187 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition of4-isocyanatobenzonitrile (22.34 mg, 0.155 mmol). The reaction mixturewas stirred at RT for 1 h after which it was filtered and purified bypreparative HPLC to afford racemic mixture of Compounds A66 and A67. Theracemate was subjected to chiral separation using preparative SFC toafford enantiomer A66 (Ret. Time 11.42 min, 11.9 mg, 23.9%) andenantiomer A67 (Ret. Time 13.16 min, 12.8 mg, 25.7%). Chiral HPLCMethod: IA preparative Column 30×250 mm, 5 μm; Mobile Phase: 30% MeOH inCO₂, 130 bar; Flow rate: 70 mL/min for 16 min.; MS(ES): m/z=481.5[M−H]⁺; HPLC Ret. Time 1.32 min. and MS(ES): m/z=483.5 [M+H]⁺ Ret. Time2.22 min. (HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.85(d, J=6.6 Hz, 1H), 7.79-7.57 (m, 5H), 7.48 (t, J=9.0 Hz, 1H), 7.40 (br.s., 1H), 7.26 (br. s., 1H), 5.04 (m, 1H), 4.80 (d, J=17.2 Hz, 1H), 4.48(d, J=3.7 Hz, 1H), 4.21-4.05 (m, 1H), 3.90 (d, J=10.3 Hz, 1H), 3.69 (d,J=4.8 Hz, 2H), 2.15-2.19 (m, 1H), 1.91-1.78 (m, 1H).

Intermediate A68A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-((methylsulfonyl)oxy)ethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A680 (500 mg, 1.139 mmol) in DCM (12 mL)at 0° C. under nitrogen were added TEA (0.206 mL, 1.481 mmol) and MsCl(0.107 mL, 1.367 mmol). The reaction mixture was allowed to stir at 0°C. for 1 h before it was diluted with equal parts water and DCM. Theorganic layer was separated and the aqueous layer was extracted twicemore with DCM. The combined organic layer was washed with brine, driedover Na₂SO₄, and filtered. The filtrate was concentrated. The crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 35-80% EtOAc in hexane). Fractionscontaining the product were combined and evaporated to affordIntermediate A68A (380 mg, 65%). MS(ES): m/z=517.1 [M+H]⁺; ¹H NMR (400MHz, chloroform-d) δ ppm 7.68 (dd, J=7.0, 2.0 Hz, 1H), 7.49 (ddd, J=8.5,4.5, 2.3 Hz, 1H), 7.32-7.19 (m, 1H), 5.19 (d, J=16.8 Hz, 1H), 4.73 (d,J=18.8 Hz, 1H), 4.52 (t, J=6.0 Hz, 3H), 4.31-4.16 (m, 1H), 3.76-3.59 (m,1H), 3.09 (s, 3H), 2.50-2.32 (m, 1H), 2.32-2.14 (m, 1H), 1.56-1.47 (m,9H).

Intermediate A68B: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-ethyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A68A (200 mg, 0.387 mmol) in THF (6 mL) at0° C. under nitrogen was added a 1 M THF solution of SUPER-HYDRIDE®(1.934 mL, 1.934 mmol). The reaction mixture was allowed to stir at RTfor 1 h before it was quenched with water. The resulting mixture wasextracted with EtOAc. The combined organic layer was washed with brine,dried over Na₂SO₄, and filtered. The filtrate was concentrated. Thecrude product was purified by silica gel chromatography (40 g REDISEP®column, eluting with a gradient from 35-80% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A68B (128 m g, 78%). MS(ES): m/z=423.1 [M+H]⁺.

Intermediate A68C:2-(3-Chloro-4-fluorophenyl)-7-ethyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA salt

To a solution of Intermediate A68B (160 mg, 0.378 mmol) in DCM (20 mL)was added TFA (2 mL). The reaction mixture was stirred at RT for 6 h andconcentrated to afford the TFA salt of Intermediate 68C which was usedas such without further purification. MS(ES): m/z=323.1 [M+H]⁺.

Compounds A68 and A69:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-ethyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A68C (40 mg, 0.092 mmol) in DMF (1 mL) wasadded Hunig's base (0.064 mL, 0.366 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition4-isocyanatobenzonitrile (13.20 mg, 0.092 mmol). The reaction mixturewas stirred at RT for 1 h after which it was filtered and purified bypreparative HPLC to afford racemic mixture of Compounds A68 and A69. Theracemate was subjected to chiral separation using preparative SFC toafford enantiomer A68 (Ret. Time 18.9 min, 9.7 mg, 22.7%) and enantiomerA69 (Ret. Time 23.9 min, 10.1 mg, 23.6%). Chiral HPLC Method: Column:CHIRALPAK® OD 21×250 mm, 10 m; Mobile Phase A: 0.1%diethylamine/heptane; Mobile Phase B: ethanol; Gradient: hold at20%-100% B over 38 minutes; Flow rate: 15 mL/min; MS(ES): m/z=465.5[M−H]⁺; HPLC Ret. Time 1.69 min. and MS(ES): m/z=467.5 [M+H]⁺ Ret. Time2.58 min. (HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.85(d, J=7.0 Hz, 1H), 7.79-7.58 (m, 5H), 7.47 (t, J=9.2 Hz, 1H), 7.39 (br.s., 1H), 7.25 (br. s., 1H), 5.01 (d, J=16.9 Hz, 1H), 4.88 (d, J=16.9 Hz,1H), 4.28 (br. s., 1H), 4.04 (dd, J=13.8, 5.0 Hz, 1H), 3.97-3.85 (m,1H), 3.43-3.29 (m, 2H), 2.12-1.96 (m, 1H), 1.80-1.67 (m, 1H).

Intermediate A70A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-methoxyethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A68A (170 mg, 0.329 mmol) in MeOH (5 mL)was added 25% sodium methoxide solution in MeOH (426 mg, 1.973 mmol).The reaction mixture was stirred at RT overnight and concentrated. Theresidue was diluted with equal parts water and DCM. The organic layerwas separated and the aqueous layer was extracted twice more with DCM.The combined organic layer was washed with brine, dried over Na₂SO₄, andfiltered. The filtrate was concentrated. The crude product was purifiedby silica gel chromatography (40 g REDISEP® column, eluting with agradient from 35-80% EtOAc in hexane). Fractions containing the productwere combined and evaporated to afford Intermediate A70A (120 mg, 81%).MS(ES): m/z=453.1 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 7.77-7.64(m, 1H), 7.55-7.44 (m, 1H), 7.34-7.16 (m, 1H), 5.44-5.27 (m, 1H), 4.79(d, J=17.8 Hz, 1H), 4.56-4.39 (m, 1H), 4.14-4.04 (m, 1H), 3.74 (dd,J=13.8, 3.8 Hz, 1H), 3.62 (t, J=6.1 Hz, 2H), 3.39 (s, 3H), 2.45-2.25 (m,1H), 1.98 (ddt, J=14.3, 8.5, 5.8 Hz, 1H), 1.59-1.48 (m, 9H).

Intermediate A70B:2-(3-Chloro-4-fluorophenyl)-7-(2-methoxyethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA salt

To a solution of Intermediate A70A (120 mg, 0.265 mmol) in DCM (15 mL)was added TFA (1 mL). The reaction mixture was stirred at RT for 6 h andconcentrated to afford the TFA salt of Intermediate A70B which was usedas such without further purification. MS(ES): m/z=353.0 [M+H]⁺.

Compounds A70 and A71:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(2-methoxyethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A70B (35 mg, 0.075 mmol) in DMF (1 mL) wasadded Hunig's base (0.026 mL, 0.150 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition4-isocyanatobenzonitrile (16.21 mg, 0.112 mmol). The reaction mixturewas stirred at RT for 1 h after which it was filtered and purified bypreparative HPLC to afford racemic mixture of Compounds A70 and A71. Theracemate was subjected to chiral separation using preparative SFC toafford enantiomer A70 (Ret. Time 35.0 min, 7.2 mg, 19.3%) and enantiomerA71 (Ret. Time 39.5 min, 7.5 mg, 20.1%). Chiral HPLC Method: Column:CHIRALPAK® IC-H 30×250 mm, 5 μm; Mobile Phase: 20% MeOH in CO₂, 150 bar;Flow rate: 70 mL/min for 42 min.; MS(ES): m/z=495.5 [M−H]⁺; HPLC Ret.Time 1.60 min. and MS(ES): m/z=497.5 [M+H]⁺ Ret. Time 2.48 min. (HPLCMethods H and I); ¹H NMR (500 MHz, DMSO-d₆)) δ ppm 7.85 (d, J=7.3 Hz,1H), 7.86-7.66 (m, 5H), 7.48 (t, J=9.0 Hz, 1H), 7.40 (br. s., 1H), 7.26(br. s., 1H), 5.02 (d, J=17.2 Hz, 1H), 4.85 (d, J=16.9 Hz, 1H), 4.44 (d,J=3.7 Hz, 1H), 4.06 (dd, J=14.1, 4.6 Hz, 1H), 3.91 (d, J=11.0 Hz, 1H),3.56 (t, J=5.9 Hz, 2H), 3.28 (s, 3H), 2.23 (dd, J=13.8, 5.7 Hz, 1H),2.00-1.82 (m, 1H).

Intermediate A72A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-(tosyloxy)ethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A66O (0.76 g, 1.732 mmol) in DCM (30 mL)were added TEA (0.483 mL, 3.46 mmol), TsCl (0.220 mL, 2.078 mmol), andDMAP (10.58 mg, 0.087 mmol). The reaction mixture was stirred at RTovernight and concentrated. The residue was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient from35-80% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A72A (0.76 g, 76%). MS(ES):m/z=593.1 [M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 7.85-7.78 (m,2H), 7.64 (dd, J=7.0, 2.0 Hz, 1H), 7.46 (ddd, J=8.5, 4.5, 2.3 Hz, 1H),7.39-7.18 (m, 3H), 5.12 (br. s., 1H), 4.73 (d, J=18.6 Hz, 1H), 4.43 (br.s., 1H), 4.32 (t, J=6.3 Hz, 2H), 4.06 (dd, J=14.1, 3.5 Hz, 1H), 3.67 (d,J=12.0 Hz, 1H), 2.45 (s, 3H), 2.41-2.29 (m, 1H), 2.19-2.08 (m, 1H),1.59-1.44 (m, 9H).

Intermediate A72B: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-fluoroethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A72A (260 mg, 0.438 mmol) in THF (15 mL)at 0° C. under nitrogen was added a 1 M THF solution oftetrabutylammonium fluoride (0.526 mL, 0.526 mmol). The reaction mixturewas stirred at RT overnight and concentrated. The residue was purifiedby silica gel chromatography (40 g REDISEP® column, eluting with agradient from 35-80% EtOAc in hexanes). Fractions containing the productwere combined and evaporated to afford Intermediate A72B (140 mg, 72%).MS(ES): m/z=441.1 [M+H]⁺.

Intermediate A72C:2-(3-Chloro-4-fluorophenyl)-7-(2-fluoroethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamideTFA salt

To a solution of Intermediate A72B (140 mg, 0.318 mmol) in DCM (10 mL)was added TFA (1 mL). The reaction mixture was stirred at RT for 6 h andconcentrated to afford the TFA salt of Intermediate A72C which was usedas such without further purification. MS(ES): m/z=341.1 [M+H]⁺.

Compounds A72 and A73:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(2-fluoroethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A72C (40 mg, 0.088 mmol) in DMF (1 mL) wasadded Hunig's base (0.030 mL, 0.173 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition of4-isocyanatobenzonitrile (19.02 mg, 0.132 mmol). The reaction mixturewas stirred at RT for 1 h after which it was filtered and purified bypreparative HPLC to afford racemic mixture of Compounds A72 and A73. Theracemate was subjected to chiral separation using preparative SFC toafford enantiomer A72 (Ret. Time 14.6 min, 12.3 mg, 28.8%) andenantiomer A73 (Ret. Time 18.4 min, 11.1 mg, 26%). Chiral HPLC Method:Column: CHIRALPAK® IC-H, 30×250 mm, 5 μm; Mobile Phase: 30% MeOH in CO₂,150 bar; Flow rate: 70 mL/min for 22 min.; MS(ES): m/z=483.5 [M−H]⁺;HPLC Ret. Time 1.61 min. and MS(ES): m/z=485.5 [M+H]⁺ Ret. Time 2.46min. (HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.85 (d,J=7.3 Hz, 1H), 7.79-7.58 (m, 5H), 7.48 (t, J=9.0 Hz, 1H), 7.41 (br. s.,1H), 7.26 (br. s., 1H), 5.00 (d, J=17.2 Hz, 1H), 4.91 (d, J=17.2 Hz,1H), 4.78 (dd, J=12.5, 5.9 Hz, 1H), 4.67 (dd, J=12.5, 5.5 Hz, 1H), 4.52(br. s., 1H), 4.07-3.93 (m, 2H), 2.45-2.28 (m, 1H), 2.14 (d, J=6.6 Hz,1H).

Intermediate A74A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(2-cyanoethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A72A (180 mg, 0.304 mmol) in DMSO (2 mL)were added tetrabutylammonium iodide (11.21 mg, 0.030 mmol) and sodiumcyanide (74.4 mg, 1.518 mmol). The reaction mixture was heated at 85° C.for 16 h and cooled to RT. It was diluted with equal parts water andDCM. The organic layer was separated and the aqueous layer was extractedtwice more with DCM. The combined organic layer was washed with brine,dried over Na₂SO₄, and filtered. The filtrate was concentrated. Thecrude product was purified by silica gel chromatography (40 g REDISEP®column, eluting with a gradient from 35-80% EtOAc in hexane). Fractionscontaining the product were combined and evaporated to affordIntermediate A74A (80 mg, 59%). MS(ES): m/z=448.1 [M+H]⁺.

Intermediate A74B:2-(3-Chloro-4-fluorophenyl)-7-(2-cyanoethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA salt

To a solution of Intermediate A74A (80 mg, 0.179 mmol) in DCM (10 mL)was added TFA (1 mL, 12.98 mmol). The reaction mixture was stirred at RTfor 6 h and concentrated to afford the TFA salt of Intermediate A74Bwhich was used as such without further purification. MS(ES): m/z=348.1[M+H]⁺.

Compounds A74 and A75:2-(3-Chloro-4-fluorophenyl)-7-(2-cyanoethyl)-N-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A74B (40 mg, 0.087 mmol) in DMF (1 mL) wasadded Hunig's base (0.030 mL, 0.173 mmol). The resulting mixture wasallowed to stir for 5 min. prior to the addition of4-isocyanatobenzonitrile (18.73 mg, 0.130 mmol). The reaction mixturewas stirred at RT for 1 h after which it was filtered and purified bypreparative HPLC to afford racemic mixture of Compounds A74 and A75. Theracemate was subjected to chiral separation using preparative SFC toafford enantiomer A74 (Ret. Time 48.0 min, 5 mg, 11.7%) and enantiomerA75 (Ret. Time 50.9 min, 5.5 mg, 12.9%). Chiral HPLC Method: Column:CHIRALPAK® IC-H, 30×250 mm, 5 μm; Mobile Phase: 20% MeOH in CO₂, 150bar; Flow rate: 70 mL/min for 60 min.; MS(ES): m/z=490.5 [M−H]⁺; HPLCRet. Time 1.47 min. and MS(ES): m/z=492.5 [M+H]⁺ Ret. Time 2.27 min.(HPLC Methods H and I); ¹H NMR (500 MHz, DMSO-d₆) δ ppm 7.87 (d, J=7.3Hz, 1H), 7.80-7.58 (m, 5H), 7.48 (t, J=9.2 Hz, 1H), 7.42 (br. s., 1H),7.24 (br. s., 1H), 5.03 (d, J=17.2 Hz, 1H), 4.87 (d, J=17.2 Hz, 1H),4.44 (br. s., 1H), 4.07 (dd, J=13.4, 4.6 Hz, 1H), 3.91 (d, J=11.4 Hz,1H), 2.79 (br. s., 2H), 2.22 (dd, J=13.8, 7.2 Hz, 1H), 2.11 (dd, J=13.8,6.8 Hz, 1H).

Intermediate A76A: Ethyl3-(3-fluorophenyl)-1-(2,2,3,3,11,11-hexamethyl-9-oxo-4,10-dioxa-8-aza-3-siladodecan-6-yl)-1H-pyrazole-5-carboxylate

To a flask charged with triphenylphosphine (2.93 g, 11.16 mmol), sealedwith a septum and purged with a dry atmosphere of nitrogen, was addedTHF (20 mL) via syringe and the reaction mixture was cooled to 0° C.Next, DIAD (2.170 mL, 11.16 mmol) was added via syringe resulting in athick milky yellow solution. A solution of Intermediate A1B (3.28 g,10.73 mmol) in THF (5.0 mL) was added to the ice-cold solution. After 15minutes, pyrazole 4B (2.01 g, 8.58 mmol) was added as a solution in THF(5.0 mL). The reaction was then allowed to warm to RT. After 18 h, thereaction mixture was diluted with EtOAc (150 mL). The organic layer waswashed with brine, dried over anhydrous Na₂SO₄, filtered andconcentrated under reduced pressure to provide a crude oil. The crudereaction mixture was purified by silica gel chromatography (220 gREDISEP® column, eluting with 0 to 15% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A76A (4.5 g, 80%) as a thick syrup. MS(ES): m/z=522.09[M+H]⁺; ¹H NMR (400 MHz, chloroform-d) δ ppm 7.49-7.60 (2H, m),7.32-7.41 (1H, m), 7.12 (1H, s), 6.99-7.07 (1H, m), 5.52-5.64 (1H, m),4.92-5.07 (1H, m), 4.37 (2H, q, J=7.28 Hz), 3.97 (2H, d, J=6.53 Hz),3.67-3.83 (2H, m), 1.37-1.50 (9H, m), 0.75-0.86 (9H, m), 0.04-0.11 (2H,m), −0.12-0.00 (6H, m).

Intermediate A76B: Ethyl1-(1-amino-3-hydroxypropan-2-yl)-3-(3-fluorophenyl)-1H-pyrazole-5-carboxylate

To an ice-cooled solution of Intermediate A76A (4.35 g, 8.34 mmol) inDCM (50 mL) was added a 4M solution of HCl in 1,4-dioxane (12.5 mL, 50.0mmol). The reaction mixture was allowed to stir at RT for 2 h. The whiteprecipitate that was generated was filtered off and the filter cake waswashed with diethyl ether. The solid was dried under vacuum for 16 h toafford Intermediate A76B as an HCl salt (2.56 g, >98%). MS(ES):m/z=308.0 [M+H]⁺. ¹H NMR (400 MHz, DMSO-d₆) δ ppm 8.04 (1H, br. s.),7.72-7.80 (1H, m), 7.44-7.54 (1H, m), 7.13-7.23 (1H, m), 5.46-5.58 (1H,m), 5.24 (1H, br. s.), 4.35 (2H, q, J=7.11 Hz), 3.58-3.80 (3H, m), 3.40(1H, d, J=11.29 Hz), 1.31-1.40 (2H, m).

Intermediate A76C:2-(3-Fluorophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a suspension of Intermediate A76B (2.56 g, 8.34 mmol) in EtOH (50 mL)was added NH₄OH (32.5 mL, 334 mmol, 40 wt %). After a few moments, thereaction mixture became homogeneous and the solution was allowed to stirat RT for 16 h. The crude reaction mixture was concentrated in vacuo anddiluted with EtOAc. The aqueous solution was neutralized to pH=7 using a1.0M aqueous solution of HCl. The organic layer was separated and theaqueous layer was extracted with EtOAc. The combined organic layers werethen washed with brine, dried over sodium sulfate, and concentrated toafford Intermediate A76C (2.1 g, 96%) as a white solid. MS(ES):m/z=261.97 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.49-7.61 (2H,m), 7.36-7.45 (1H, m), 7.16-7.21 (1H, s), 7.06 (1H, tdd, J=8.41, 8.41,2.51, 1.00 Hz), 6.28 (1H, br. s.), 4.56-4.67 (1H, m), 4.07-4.23 (2H, m),3.72-3.85 (2H, m), 3.14-3.37 (1H, m).

Intermediate A76D:7-(((tert-Butyldimethylsilyl)oxy)methyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a solution of Intermediate A76C (11.5 g, 44.1 mmol) in DMF (120 mL)were added imidazole (3.66 g, 53.8 mmol) and TBSCl (7.64 g, 50.7 mmol)and the reaction mixture was stirred at RT for 14 h. The solution wasconcentrated and the crude material was diluted with equal parts waterand DCM (250 mL each). The organic layer was separated and washedseveral more times with water before being dried over sodium sulfate andconcentrated to afford Intermediate A76D (13.57 g, 82%) as a whitesolid. MS(ES): m/z=375.95 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm7.52-7.63 (1H, m), 7.35-7.46 (1H, m), 7.13-7.20 (1H, m), 6.99-7.11 (1H,m), 6.01-6.25 (1H, m), 4.48-4.62 (1H, m), 4.10 (1H, dd, J=10.04, 4.27Hz), 3.84-4.03 (3H, m), 0.90-0.93 (9H, m), 0.07-0.12 (6H, m).

Intermediate A76E:(2-(3-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-7-yl)methanol

To a solution of Intermediate A76D (5.162 g, 13.75 mmol) in THF (125 mL)cooled to −15° C., was introduced a 1M solution of LAH in THF (38.5 mL,38.5 mmol) dropwise. The reaction mixture was allowed to gradually reachroom temperature and stir for an additional 18 h. The reaction mixturewas carefully quenched at −15 OC with sequential addition of H₂O (38.5mL), NaOH (15% aq. solution, 38.5 mL) and H₂O (114 mL). The slurry wasthen allowed to stir at RT for 30 minutes, followed by the addition ofanhydrous MgSO₄. The mixture was allowed to stir for 15 minutes and thenthe inorganics were filtered off. The filter cake was washed with DCM(150 mL). The biphasic filtrate was concentrated under reduced pressureto remove THF. The aqueous layer was then extracted with DCM (3×50 mL).The combined organic layers were washed with brine, dried over anhydrousNa₂SO₄, filtered and concentrated under reduced pressure to affordIntermediate A76E (3.41 g, >98%) as a white sticky solid. MS(ES):m/z=247.94 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.55 (1H, dt,J=7.84, 1.10 Hz), 7.48 (1H, ddd, J=10.16, 2.51, 1.63 Hz), 7.31-7.40 (1H,m), 6.96-7.04 (1H, m), 6.32 (1H, s), 4.26-4.35 (1H, m), 4.07-4.15 (2H,m), 4.01-4.07 (1H, m), 3.91-3.98 (1H, m), 3.41 (1H, dd, J=13.30, 4.77Hz), 3.12 (1H, dd, J=13.18, 7.15 Hz).

Intermediate A76F:7-(((tert-Butyldimethylsilyl)oxy)methyl)-2-(3-fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a flask charged with Intermediate A76E (3.41 g, 13.79 mmol) was addedDMAP (0.084 g, 0.690 mmol) and triethylamine (2.307 mL, 16.55 mmol). Thereaction mixture was dissolved in DCM (125 mL) and finally TBSCl (2.286g, 15.17 mmol) was added. The reaction mixture was then allowed to stirat 22° C. for 16 h after which the mixture was diluted with a saturatedaq. solution of NaHCO₃ and the two layers were separated. The aqueousphase was extracted with DCM (2×50 mL). The combined organic layers werewashed with water, brine, dried over anhydrous Na₂SO₄, filtered andconcentrated under reduced pressure to afford a pale yellow oil. CrudeIntermediate A76F (5.12 g, 92%) was found to be 90% pure and carriedforward to amine protection with Boc-anhydride without furtherpurification. MS(ES): m/z=361.94 [M+H]⁺.

Intermediate A76G: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A76F (4.33 g, 11.98 mmol) in DCM (100 mL)was added triethylamine (6.68 mL, 47.9 mmol) and DMAP (0.073 g, 0.599mmol). To the colorless solution was then added di-tert-butyldicarbonate (3.92 g, 17.97 mmol) resulting in gas evolution. Thereaction mixture was allowed to stir at 22° C. for 24 h prior to beingquenched with a saturated aqueous solution of NaHCO₃. The layers wereseparated, and the aqueous layer was extracted twice more with DCM. Thecombined organic layers were washed with water, followed by brine, driedover sodium sulfate, and concentrated in vacuo. The crude product waspurified by silica gel chromatography (120 g REDISEP® column, elutingwith 20% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A76G (4.87 g, 88%) as acolorless oil. MS(ES): m/z=461.77 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d)δ ppm 7.45-7.58 (1H, m), 7.35 (1H, td, J=8.03, 6.02 Hz), 6.95-7.05 (1H,m), 6.29-6.39 (1H, m), 4.55-4.79 (2H, m), 4.33 (1H, br. s.), 4.06-4.22(2H, m), 3.74-4.03 (2H, m), 1.49-1.54 (9H, m), 0.83-0.95 (9H, m),−0.01-0.14 (6H, m).

Intermediate A76H: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-fluorophenyl)-3-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A76G (4.87 g, 10.6 mmol) in DCM (56 mL)and MeOH (14 mL) was added NIS (7.12 g, 31.6 mmol) and the reactionmixture was allowed to stir at RT for 90 min. The solution was thenconcentrated under reduced pressure to provide a red oil. The crudereaction mixture was purified by silica gel chromatography (120 gREDISEP® column, eluting with a gradient of 0-30% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A76H (5.70 g, 92%) as a sticky solid. MS(ES): m/z=587.95[M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.65 (1H, dq, J=7.78, 0.84Hz), 7.54-7.60 (1H, m), 7.36-7.44 (1H, m), 7.08 (1H, tdd, J=8.44, 8.44,2.57, 0.88 Hz), 4.50-4.71 (1H, m), 4.41-4.49 (1H, m), 4.02-4.40 (3H, m),3.83-3.99 (1H, m), 3.75-3.82 (1H, m), 1.53 (8H, s), 0.84-0.93 (10H, m),−0.01-0.15 (6H, m).

Intermediate A76I: tert-Butyl7-(((tert-butyldimethylsilyl)oxy)methyl)-2-(3-fluorophenyl)-3-cyano-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a flask equipped with a reflux condenser and charged withIntermediate A76H (3.84 g, 6.54 mmol) was added DMF (43.6 mL) andcopper(I) cyanide (1.463 g, 16.34 mmol). The heterogeneous reactionmixture was heated to 100° C. for 18 h. The reaction mixture was cooledto RT and the solution was filtered through a pad of CELITE®. The filtercake was washed with EtOAc. The filtrate was concentrated under reducedpressure to afford the crude reaction mixture as a dark green oil. Theproduct was purified by silica gel chromatography (80 g REDISEP® column,eluting with a gradient of 5-30% EtOAc in hexanes). Fractions containingthe product were combined and evaporated to afford Intermediate A76I(1.441 g, 45%) as a white solid. MS(ES): m/z=431.0 [M+H₂O-OtBu]⁺; ¹H NMR(400 MHz, chloroform-d) δ ppm 7.62-7.83 (2H, m), 7.39-7.51 (1H, m),7.08-7.19 (1H, m), 4.67-4.96 (2H, m), 4.34 (1H, br. s.), 3.84-4.19 (4H,m), 1.47-1.54 (9H, m), 0.79-0.91 (9H, m), −0.02-0.10 (6H, m).

Intermediate A76J: tert-Butyl3-carbamoyl-2-(3-fluorophenyl)-7-(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To an ice-cooled solution of Intermediate A76I (1.44 g, 2.96 mmol) inDMSO (20 mL) was added a 5 M aq. solution of KOH (2.96 mL, 14.8 mmol)and H₂O₂ (6.05 mL, 59.2 mmol, 30% w/v in H₂O) and the reaction mixturewas stirred at 22° C. for 3 h. The reaction mixture was then partitionedbetween equal parts water and EtOAc and the layers were separated. Theaqueous phase was extracted twice more with EtOAc. The combined organiclayers were washed with water, brine, dried over anhydrous MgSO₄,filtered and concentrated under reduced pressure to afford a whitesolid. The crude reaction mixture was purified by silica gelchromatography (120 g REDISEP® column, eluting with a gradient of75-100% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A76J (0.997 g, 52%) as awhite solid contaminated with dimethyl sulfone. MS(ES): m/z=412.96[M+Na]⁺.

Intermediate A76K: tert-Butyl3-carbamoyl-7-(fluoromethyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

A suspension of Intermediate A76J (131.5 mg, 0.337 mmol) in DCM (5.5 mL)was allowed to cool to −78° C. DAST (0.067 mL, 0.505 mmol) was addeddropwise to the solution which was then allowed to warm to RT. Afterstirring at RT for 1 h, the reaction was quenched by the addition of asaturated aq. solution of NaHCO₃ at 0° C. The two layers were separatedand the aqueous layer was extracted with DCM (3×10 mL). The combinedorganic layers were washed with brine, dried over anhydrous MgSO₄,filtered and concentrated under reduced pressure to afford an orangeoil. The crude reaction mixture was purified by silica gelchromatography (24 g REDISEP® column, eluting with 75% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A76K (52.8 mg, 40%) as a white solid. MS(ES):m/z=393.0 [M+H]⁺.

Compounds A76 and A77:N⁵-(4-Cyanophenyl)-7-(fluoromethyl)-2-(3-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A76K (0.053 g, 0.135 mmol) in DCM (3.0 mL)was added trifluoroacetic acid (0.103 mL, 1.346 mmol). The reactionmixture was then allowed to stir at RT for 3 h prior to the removal ofthe volatiles to afford the crude bis TFA salt.

The TFA salt was then dissolved in DMF (1.3 mL) and treated with DIPEA(0.117 mL, 0.673 mmol). The resulting mixture was allowed to stir for 5min. prior to the addition of 4-isocyanatobenzonitrile (0.039 g, 0.269mmol). The reaction was allowed to stir for 2 h after which it wasfiltered and purified via preparative HPLC. Fractions containing thedesired product were combined and evaporated to afford the desiredcompound which was further purified through chiral separation usingpreparative SFC.: CHIRALPAK® IA-H, 30×250 mm, 5 μm eluted with 20% MeOH:80% CO₂ at 150 bar and 35° C. at 70 mL/min. The first elutingenantiomer, r_(t)=23 min: Compound (S)-A76 (0.0166 g, 28%) and thesecond eluting enantiomer, r_(t)=35 min: Compound (R)-A77 (0.0207 g,34%) were thus separated. MS(ES), m/z=437.4 [M+H]⁺; HPLC Ret. Time 1.44min. and 2.18 min. (Methods H and I respectively). ¹H NMR (600 MHz,DMSO-d₆) δ ppm 7.62-7.74 (4H, m), 7.35-7.57 (4H, m), 7.17-7.33 (2H, m),4.77-5.11 (4H, m), 4.59-4.72 (1H, m), 4.18 (1H, d, J=13.94 Hz), 4.04(1H, dd, J=14.12, 6.42 Hz).

Intermediate A78A: tert-Butyl3-carbamoyl-2-(3-fluorophenyl)-7-(((methylsulfonyl)oxy)methyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To an ice-cold suspension of Intermediate A76J (148.2 mg, 0.380 mmol) inDCM (3.8 mL) was added triethylamine (0.063 mL, 0.456 mmol) followed bythe dropwise addition of methanesulfonyl chloride (0.032 mL, 0.418mmol). The resultant homogeneous reaction mixture was allowed to warm toRT and continue to stir for an additional 2 h. The reaction was thenquenched with a saturated aq. solution of NaHCO₃. The two layers wereseparated and the aqueous layer was extracted with DCM (2×10 mL). Thecombined organic layers were washed with brine, dried over anhydrousMgSO₄, filtered and the filtrate concentrated under reduced pressure toafford a colorless oil. The crude reaction mixture was purified bysilica gel chromatography (24 g REDISEP® column, eluting with a gradientof 60-85% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A78A (0.0948 g, 33%) as awhite solid. MS(ES): m/z=468.9 [M+H]⁺.

Intermediate A78B: tert-Butyl3-carbamoyl-2-(3-fluorophenyl)-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A78A (0.0948 g, 0.202 mmol) in THF (2.0mL) at RT was added dropwise a 1M solution of LiEt₃BH in THF (2.02 mL,2.02 mmol), and the reaction mixture was stirred for 2 h. The reactionwas then carefully quenched with a saturated aq. solution of NaHCO₃. Theorganic phase was separated and the aqueous layer was extracted twicemore with DCM. The combined organic layers were washed with brine, driedover sodium sulfate, and concentrated to provide a pale yellow oil. Thecrude reaction mixture was purified by silica gel chromatography (24 gREDISEP® column, eluting with a gradient of 50-90% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A78B (0.029 g, 81%) as a white foam. MS(ES): m/z=375.08[M+H]⁺.

Compounds A78 and A79:N⁵-(4-Cyanophenyl)-2-(3-fluorophenyl)-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds A78 and A79 were synthesized analogous to Compounds A76 andA77 by reacting deprotected A78B with 4-isocyanatobenzonitrile. Thecompound was purified by preparative HPLC and further purified throughchiral separation using preparative HPLC: CHIRALCEL® OJ, 21×250 mm, 10μm eluted with 65% 0.1% diethylamine in heptane: 35% EtOH at 15 mL/min.The first eluting enantiomer, r_(t)=12.3 min: Compound (S)-A78 (0.009 g,32%) and the second eluting enantiomer, r_(t)=22.2 min: Compound (R)-A79(0.009 g, 32%) were thus separated. MS(ES): m/z=419.1 [M+H]⁺; HPLC Ret.Time 1.40 min and 2.26 min. (Methods H and I respectively); ¹H NMR (500MHz, DMSO-d₆) δ ppm 7.66-7.75 (4H, m), 7.34-7.55 (4H, m), 7.16-7.25 (2H,m), 4.82-5.02 (2H, m), 4.40-4.49 (1H, m), 4.09-4.17 (1H, m), 3.67-3.74(1H, m), 1.49 (3H, d, J=6.60 Hz).

Intermediate A80A: 1-Amino-3,3-dimethylbutan-2-ol

In a sealed pressure tube at RT was added 2-(tert-butyl)oxirane (1.0 g,9.98 mmol) and ammonia in methanol (7N) (4.28 mL, 30.0 mmol). Thereaction vessel was sealed and heated at 70° C. for 4 h. The reactionmixture was cooled to RT and concentrated and under reduced pressure.Crude Intermediate A80A (0.968, 83% yield) was used as such withoutfurther purification. ¹H NMR (400 MHz, DMSO-d₆) δ 3.15-2.88 (m, 1H),2.66-2.46 (m, 1H), 2.42-2.21 (m, 1H), 0.88-0.73 (m, 9H).

Intermediate A80B: tert-Butyl (2-hydroxy-3,3-dimethylbutyl)carbamate

To a solution of Intermediate A80A (0.812 g, 6.93 mmol) in DCM (20 mL)were added TEA (2.414 mL, 17.32 mmol), DMAP (0.042 g, 0.346 mmol), anddi-tert-butyl dicarbonate (2.268 g, 10.39 mmol). The reaction mixturewas allowed to stir overnight at RT. The reaction mixture was dilutedwith EtOAc (500 mL) and washed with brine, dried (MgSO₄) andconcentrated. The crude product was purified by silica gelchromatography (80 g REDISEP® column, eluting with a gradient from 0-30%EtOAc in hexanes). Fractions containing the product were combined andconcentrated to afford Intermediate A80B (1.2 g, 80% yield). ¹H NMR (400MHz, DMSO-d₆) δ 4.07-3.93 (m, 1H), 3.92-3.80 (m, 1H), 3.62 (dd, J=10.3,7.8 Hz, 1H), 1.46 (s, 9H), 0.87 (s, 9H).

Intermediate A80C: tert-Butyl7-(tert-butyl)-3-carbamoyl-2-(3-chloro-4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate A80C was prepared using an analogous synthetic strategy tothat employed for the preparation of Intermediate A1N (outlined inScheme 41). Intermediate A80B was used in substitution for IntermediateA1B in the initial Mitsunobu coupling reaction. MS(ES) m/z=451 [M+H]⁺.

Compounds A80 and A81:7-(tert-Butyl)-2-(3-chloro-4-fluorophenyl)-N-(4-cyanophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A80C (0.305 g, 0.676 mmol) in DCM (20 mL)was added TFA (0.313 mL, 4.06 mmol) and the resulting solution wasallowed to stir at RT for 18 h. The reaction was then concentrated underreduced pressure and the afforded crude bis TFA salt Intermediate A80D(0.314 g, >98% yield) used in the subsequent reaction with nopurification. To a solution of Intermediate A80D (0.05 g, 0.143 mmol) inDMF (2 mL) at RT under nitrogen were added DIPEA (0.124 mL, 0.713 mmol)and 2,4-isocyanatobenzonitrile (0.041 g, 0.285 mmol). The reactionmixture was stirred for 1 h. The reaction mixture was filtered andconcentrated. The crude material was purified via preparative HPLC.Fractions containing the desired product were combined and dried viacentrifugal evaporation to obtain the racemic product. The compound wasfurther purified through chiral separation using preparative HPLC:CHIRALPAK® AS, 21×250 mm, 10 μm column eluted with 80% heptanes with0.1% diethylamine: 20% EtOH at 15 mL/min, and monitored by UV at 254 nm.The first eluting enantiomer, r_(t)=10.9 min: (S)-A80 and the secondeluting enantiomer, r_(t)=17.1 min: (R)-A81 were thus separated. MS(ES)m/z=495 [M+H]⁺; Ret. time=1.98 and 2.86 min. (Methods H and Irespectively). ¹H NMR (500 MHz, DMSO-d₆) δ 7.81-7.88 (1H, m), 7.61-7.77(6H, m), 7.47 (1H, t, J=8.99 Hz), 7.20-7.45 (2H, m), 5.07-5.18 (1H, m),4.71-4.84 (1H, m), 4.53-4.64 (1H, m), 4.17 (1H, br. s.), 0.94-1.07 (9H,m).

Intermediate A82A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-isopropyl-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

Intermediate A82A was prepared using an analogous synthetic strategy tothat employed for the preparation of Intermediate A80C. An analogousamino alcohol to Intermediate A80B was prepared commencing with2-(iso-propyl)oxirane and used in substitution for Intermediate A1B inthe initial Mitsunobu coupling reaction. MS(ES) m/z=437 [M+H]⁺.

Compounds A82 and A83:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-isopropyl-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

Compounds A82 and A83 were prepared analogously to Compounds A80 and A81using Intermediate A82B. The racemic compound obtained from preparativeHPLC was further purified through chiral separation using preparativeHPLC: CHIRALPAK® AD, 21×250 mm, 10 μm column eluted with 80% heptanewith 0.1% diethylamine: 20% EtOH at 15 mL/min The first elutingenantiomer, r_(t)=18.4 min: (S)-A82 and the second eluting enantiomer,r_(t)=25.1 min: (R)-A83 were thus separated. MS(ES) m/z=481 [M+H]⁺; Ret.time=1.74 and 2.82 min. (Methods H and I respectively). ¹H NMR (500 MHz,DMSO-d₆) δ ppm 7.78-7.90 (1H, m), 7.61-7.76 (5H, m), 7.47 (1H, t, J=8.99Hz), 7.14-7.43 (2H, m), 4.82-5.03 (2H, m), 4.16-4.24 (1H, m), 4.12 (1H,dd, J=14.12, 4.95 Hz), 3.72-3.84 (1H, m), 2.40 (1H, dq, J=13.11, 6.51Hz), 1.01 (3H, d, J=6.97 Hz), 0.80-0.92 (3H, m).

Intermediate A84A: 1,1,1-Trifluoro-3-((4-methoxybenzyl)amino)propan-2-ol

To a solution of 2-(trifluoromethyl)oxirane (2.00 g, 17.8 mmol) inisopropanol (20 mL) in a pressure tube was added(4-methoxyphenyl)methanamine (7.35 g, 53.5 mmol). The reaction vesselwas capped and heated at 80° C. for 3 h. The reaction mixture wasconcentrated and purified by silica gel chromatography (80 g REDISEP®column, eluting with a gradient from 0-60% EtOAc in hexanes). Therequired fractions were concentrated to obtain Intermediate A84A (3.1 g,71% yield) as a white solid. MS(ES) m/z=287 [M+H]⁺. ¹H NMR (400 MHz,DMSO-d₆) δ 7.29-7.17 (m, 2H), 6.87 (d, J=8.5 Hz, 2H), 6.25 (br. s., 1H),4.04 (td, J=7.8, 3.3 Hz, 1H), 3.72 (s, 3H), 3.66 (d, J=1.8 Hz, 2H),2.74-2.55 (m, 2H), 2.08 (br. s., 1H).

Intermediate A84B: 3-(3-Chloro-4-fluorophenyl)-1H-pyrazole-5-carboxylicacid

To a solution of Intermediate A66F (5.0 g, 18.6 mmol) in EtOH (10 mL)and THF (20 mL) at RT was added a solution of LiOH (5.35 g, 223 mmol) inwater (6.67 mL). The reaction mixture was stirred at RT overnight. Thereaction mixture was concentrated and the resulting residue wasdissolved in water (200 mL) and extracted with ether. The organic layerwas separated and the aqueous layer was acidified to a pH of 2 using aconc. aq. solution of HCl. The aqueous layer was extracted with EtOAc(3×200 mL). The combined organic layers were washed with brine, dried(MgSO₄) and concentrated to obtain Intermediate A84B (3.02 g, 67.4%yield). The product was used as such without further purification.MS(ES) m/z=241 [M+H]⁺.

Intermediate A84C:3-(3-Chloro-4-fluorophenyl)-N-(4-methoxybenzyl)-N-(3,3,3-trifluoro-2-hydroxypropyl)-1H-pyrazole-5-carboxamide

To a solution of Intermediate A84B (0.8 g, 3.32 mmol) in 1,4-dioxaneheated at 50° C. was added CDI (0.593 g, 3.66 mmol). The reaction washeated for 30 min, and Intermediate A84A (0.911 g, 3.66 mmol) was added.The reaction mixture was allowed to stir for an additional 30 min. at50° C. The reaction mixture was diluted with water, cooled to RT, andwas extracted with EtOAc (3×100 mL). The combined organic layers werewashed with brine, dried (MgSO₄), and concentrated. The residue waspurified by silica gel chromatography (80 g REDISEP® column, elutingwith a gradient from 0-30% EtOAc in hexanes). Fractions containing theproduct were combined and concentrated to afford Intermediate A84C(1.015 g, 64.7% yield). MS(ES) m/z=472 [M+H]⁺.

Intermediate A84D:2-(3-Chloro-4-fluorophenyl)-5-(4-methoxybenzyl)-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To an ice-cold stirred solution of triphenylphosphine (0.733 g, 2.80mmol) in THF (30 mL) was added DIAD (0.544 mL, 2.80 mmol) resulting in athick milky yellow solution. After 10 min. a solution of IntermediateA84C (1.015 g, 2.151 mmol) in THF (5.0 mL) was added. The reaction wasthen allowed to warm to RT and stir overnight. The reaction mixture wasdiluted with EtOAc (200 mL) and washed with brine, dried (MgSO₄) andconcentrated in vacuo. The crude yellow oil was purified by BIOTAGE®chromatography (80 g REDISEP® column, eluting with a gradient from 0-40%EtOAc in hexanes). Fractions containing the product were combined andconcentrated to afford Intermediate A84D (0.614 g, 62.8% yield). MS(ES)m/z=454 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ 7.88 (dd, J=7.0, 2.0Hz, 1H), 7.66 (ddd, J=8.6, 4.6, 2.1 Hz, 1H), 7.31-7.14 (m, 4H),6.94-6.85 (m, 2H), 5.01-4.89 (m, 1H), 4.72 (s, 2H), 4.06-3.96 (m, 1H),3.85-3.74 (m, 4H).

Intermediate A84E:2-(3-Chloro-4-fluorophenyl)-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one

To a solution of Intermediate A84D (0.405 g, 0.892 mmol) in acetonitrile(5 mL) and water (0.556 mL) at RT was added CAN (1.957 g, 3.57 mmol).The reaction mixture was allowed to stir at RT for 24 h. The reactionmixture was concentrated, the residue was dissolved in methanol andpurified by reverse phase preparative HPLC using a 30×100 mm XTERRA®column eluted with 30-100% B, for 20 min. (Solvent A: 90% water, 10%methanol, 0.1% TFA: Solvent B: 10% water, 90% methanol, 0.1% TFA). Therequired fractions were combined and concentrated to obtain IntermediateA84E (0.1 g, 34% yield). MS(ES) m/z=334 [M+H]⁺.

Intermediate A84F:2-(3-Chloro-4-fluorophenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine

To a solution of Intermediate A84E (0.1 g, 0.300 mmol) in anhydrous THF(10 mL) at 0° C. under nitrogen was added a solution of LAH (0.180 mL,0.360 mmol, 2M in THF). The reaction mixture was allowed to warm to RTand stirred for 4 h. The reaction mixture was cooled to 0° C. and anadditional equivalent of LAH was added and the solution was warmed to RTand stirred for 5 h. The reaction mixture was again cooled to 0° C. andquenched by slow addition of a saturated aq. solution of Rochelle'ssalt. The solution was then extracted with EtOAc (3×) and the combinedorganic layers were washed with brine, dried (MgSO₄) and concentrated.The crude residue was purified by silica gel chromatography (24 gREDISEP® column, eluting with a gradient from 0-80% EtOAc in hexanes).Fractions containing the product were combined and concentrated toafford Intermediate A84F (0.06 g, 63% yield, contaminated with 15% ofthe des-chloro by-product). MS(ES) m/z=320 [M+H]⁺.

Intermediate A84G: tert-Butyl2-(3-chloro-4-fluorophenyl)-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A84F (0.06 g, 0.188 mmol) in DCM (10 mL)were added TEA (0.065 mL, 0.469 mmol), DMAP (1.146 mg, 9.38 μmol), andBoc₂O (0.061 g, 0.282 mmol). The reaction mixture was stirred overnightat RT. The reaction mixture was diluted with EtOAc (300 mL) and washedwith brine, dried (MgSO₄) and concentrated. The crude product waspurified by silica gel chromatography using (24 g REDISEP® column,eluting with a gradient from 0-30% EtOAc in hexanes). Fractionscontaining the product were combined and concentrated to affordIntermediate A84G (0.055 g, 70% yield). MS(ES) m/z=420 [M+H]⁺.

Intermediate A84H: tert-Butyl2-(3-chloro-4-fluorophenyl)-3-iodo-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A84G (0.055 g, 0.131 mmol) in a 4:1mixture of CH₂Cl₂ (10 mL) and MeOH (2.5 mL) was added NIS (0.088 g,0.393 mmol). The reaction mixture was stirred at RT. After 90 min.,another equivalent of NIS was added and the resulting solution wasstirred overnight at RT. The reaction mixture was concentrated in vacuoaffording the crude product as a red oil. The product was purified bysilica gel chromatography using (24 g REDISEP® column, eluting with agradient from 0-30% EtOAc in hexanes). Fractions containing the productwere combined and concentrated to afford Intermediate A84H (0.059 g, 83%yield). MS(ES) m/z=546 [M+H]⁺.

Intermediate A841: tert-Butyl2-(3-chloro-4-fluorophenyl)-3-cyano-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A84H (0.115 g, 0.245 mmol) in DMF (20 mL)was added CuCN (0.055 g, 0.613 mmol). The reaction mixture was heated ina sealed tube at 120° C. for 16 h. The reaction mixture was filteredthrough a pad of CELITE®, the filter cake washed with EtOAc and thefiltrate was concentrated under reduced pressure. The crude reactionmixture was purified by silica gel chromatography (24 g REDISEP® column,eluting with a gradient from 0-40% EtOAc in hexanes). Fractionscontaining the product were combined and concentrated to affordIntermediate A84I (0.075 g, 83% yield). MS(ES) m/z=369 [M+H]⁺.

Intermediate A84J: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A84I (0.061 g, 0.137 mmol) in EtOH (10 mL)at RT was added a 5M aq. solution of KOH (0.137 mL, 0.686 mmol). Thereaction mixture was cooled to 0° C. and hydrogen peroxide (0.280 mL,2.74 mmol, 30% w/v in H₂O) was added dropwise. The reaction mixture wasallowed to warm to RT and stir overnight. The reaction mixture wasconcentrated and the resulting residue was diluted with EtOAc. Thesolution was washed with water and brine, and then dried (MgSO₄) andconcentrated. The crude product was purified by silica gelchromatography (24 g REDISEP® column, eluting with a gradient from 0-20%MeOH in DCM). The required fractions were concentrated to obtainIntermediate A84J (0.046 g, 72% yield) as a white solid. MS(ES) m/z=463[M+H]⁺.

Intermediate A84K:2-(3-Chloro-4-fluorophenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxamide,TFA

To a solution of Intermediate A84J (0.141 g, 0.305 mmol) in DCM (10 mL)was added TFA (0.141 mL, 1.828 mmol). The reaction mixture was stirredovernight at RT. The reaction mixture was concentrated to obtain crudeIntermediate A84K (0.145 g, 0.304 mmol, 100% yield). The yield wasassumed to be quantitative and the product was used as such withoutfurther purification. MS(ES) m/z=363 [M+H]⁺.

Compounds A84 and A85:2-(3-Chloro-4-fluorophenyl)-N⁵-(4-cyanophenyl)-7-(trifluoromethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-3,5(4H)-dicarboxamide

To a solution of Intermediate A84K (0.036 g, 0.099 mmol) in DMF (2 mL)at RT under nitrogen were added DIPEA (0.087 mL, 0.496 mmol) and2-isocyanato-2-methylpropane (0.029 g, 0.199 mmol). The reaction mixturewas stirred for 1 h. The reaction mixture was filtered and concentrated.The crude material was purified via preparative HPLC. Fractionscontaining the desired product were combined and dried via centrifugalevaporation to obtain the racemic product. The compound was furtherpurified through chiral separation using preparative HPLC: CHIRALCEL® OD21×250 mm, 10 μm column eluted with 85% heptane with 0.1% diethylamine:15% EtOH at 15 mL/min, monitored by UV at 254 nm. The first elutingenantiomer, r_(t)=29.3 min: (S)-A84 and the second eluting enantiomer,r_(t)=38.5 min: (R)-A85 were thus separated. MS(ES) m/z=507 [M+H]⁺; Ret.time=1.74 and 2.98 min. (Methods H and I respectively). ¹H NMR (500 MHz,DMSO-d₆) δ ppm 7.79-7.86 (1H, m), 7.70-7.75 (2H, m), 7.68 (1H, td,J=5.41, 2.38 Hz), 7.64 (2H, d, J=8.80 Hz), 7.36-7.57 (3H, m), 7.35-7.37(1H, m), 5.50 (1H, br. s.), 5.39 (1H, d, J=17.2 Hz), 4.86 (1H, d, J=14.3Hz), 4.63-4.75 (1H, m), 3.76 (1H, d, J=14.7 Hz).

Intermediate A86A: tert-Butyl 4-(3-chlorophenyl)-2,4-dioxobutanoate

Under an atmosphere of nitrogen, a solution of 3′-chloroacetophenone(1.015 mL, 7.82 mmol) in anhydrous diethyl ether (50 mL) was allowed tocool to −78° C. for 15 minutes prior to the slow addition of a 1.0 Msolution of LHMDS (8.60 mL, 8.60 mmol) in THF. The enolate formation wasallowed to stir for 45 minutes at −78° C., after which di-tert-butyloxalate (1.898 g, 9.38 mmol) was added as a single portion. The paleyellow reaction mixture was allowed to warm to RT and stirred for 18 h.The dark-green solution was then quenched with 50 mL of a 1.0 M aq.solution of HCl. The two layers were separated and the aq. layer wasextracted twice more with EtOAc. The combined organic layers were washedwith brine, dried over anhydrous MgSO₄, filtered and the filtrateconcentrated under reduced pressure to afford an orange oil which waspurified by silica gel chromatography (40 g REDISEP® column, elutingwith a gradient from 0-20% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A86A (2.17g, 98%) as a pale yellow solid. ¹H NMR (400 MHz, chloroform-d) δ ppm7.94-7.99 (1H, m), 7.86 (1H, dt, J=7.78, 1.38 Hz), 7.58 (1H, ddd,J=7.97, 2.20, 1.13 Hz), 7.43-7.49 (1H, m), 6.94-6.99 (1H, m), 1.58-1.63(9H, m).

Intermediate A86B: tert-Butyl3-(3-chlorophenyl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate A86A (2.17 g, 7.68 mmol) in ethanol (80mL) was added hydrazine hydrate (0.471 mL, 7.68 mmol, 80% wt). Thesolution was allowed to stir for 18 h at RT. There was little conversionto the desired pyrazole so at this point acetic acid (5 mL) was addedand the reaction mixture was heated to 60° C. for 24 h. The reactionmixture was diluted with EtOAc (100 mL) and quenched by the addition ofa saturated aq. solution of NaHCO₃. The organic layer was separated andwashed with brine (2×100 mL). The organic layer was dried over sodiumsulfate and concentrated in vacuo. The crude reaction mixture waspurified by silica gel chromatography (80 g REDISEP® column, elutingwith a gradient of 0-60% EtOAc in hexanes). Fractions containing theproduct were combined and evaporated to afford Intermediate A86B (1.82g, 83%) as a yellow crystalline solid. ¹H NMR (400 MHz, DMSO-d₆) δ ppm13.70-14.15 (1H, m), 7.93 (1H, t, J=1.76 Hz), 7.83 (1H, d, J=7.28 Hz),7.22-7.53 (3H, m), 1.51-1.59 (9H, m).

Intermediate A86C: tert-Butyl3-(3-chlorophenyl)-1-(cyanomethyl)-1H-pyrazole-5-carboxylate

To a flask charged with an ice-cooled solution of Intermediate A86B(1.82 g, 6.53 mmol) in DMF (15 mL) is added a 2.0 M solution of NaHMDSin THF (3.43 mL, 6.86 mmol) dropwise. The reaction mixture is allowed tostir for 5 minutes and the ice bath is subsequently removed,chloroacetonitrile (0.456 mL, 7.19 mmol), which had been passed througha column of CELITE® and NaHCO₃, was added to the reaction mixture. Thereaction was allowed to warm to RT and stirred for an additional 18 h.The reaction was quenched by the addition of 1 mL of a saturated aq.solution of NH₄Cl. The reaction was diluted with equal parts water andEtOAc and the resulting mixture was allowed to stir vigorously for 15min. The organic layer was separated, dried over sodium sulfate, andconcentrated in vacuo to afford an orange solid which was purified bysilica gel chromatography (80 g REDISEP® column, eluting with a gradientof 0-50% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A86C (1.87 g, 90%) as awhite solid. MS(ES): m/z=261.91 [M+H₂O-OtBu]⁺. ¹H NMR (400 MHz,chloroform-d) δ ppm 7.78-7.83 (1H, m), 7.66-7.73 (1H, m), 7.31-7.40 (2H,m), 7.08-7.15 (1H, m), 5.50-5.60 (2H, m), 1.59-1.69 (9H, m).

Intermediate A86D: tert-Butyl3-(3-chlorophenyl)-1-(1-cyanocyclopropyl)-1H-pyrazole-5-carboxylate

To an ice-cooled solution of Intermediate A86C (1.87 g, 5.88 mmol) and1-bromo-2-chloroethane (0.844 mL, 7.36 mmol) in DMF (20 mL) was addedNaH (0.588 g, 14.71 mmol) (60% dispersion in mineral oil) portionwise.The cloudy solution was allowed to slowly warm to RT and stirred for 16h prior to quenching with the addition of 10 mL of a saturated aq.solution of NH₄Cl. The mixture was then partitioned in equal parts waterand EtOAc (250 mL each) by vigorous stirring for 15 minutes. The organiclayer was separated, washed with brine, dried over sodium sulfate, andconcentrated in vacuo to afford an orange oil which was purified bysilica gel chromatography (80 g REDISEP® column eluting with a gradientof 0-50% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A86D (1.02 g, 50%) as awhite solid. MS(ES): m/z=287.96 [M+H₂O-OtBu]⁺. ¹H NMR (400 MHz,chloroform-d) δ ppm 7.78-7.82 (1H, m), 7.64-7.68 (1H, m), 7.33-7.37 (2H,m), 7.11 (1H, s), 1.67 (9H, s), 1.64 (2H, s), 1.54-1.58 (2H, m).

Intermediate A86E: tert-Butyl1-(1-(aminomethyl)cyclopropyl)-3-(3-chlorophenyl)-1H-pyrazole-5-carboxylate

To a solution of Intermediate A86D (0.211 g, 0.613 mmol) in MeOH (15 mL)was added cobalt(II) chloride (0.239 g, 1.838 mmol). The bright purplesolution was allowed to cool to 0° C. prior to the slow and carefuladdition of sodium borohydride (0.232 g, 6.13 mmol). After stirring at0° C. for 10 minutes, the reaction mixture was warmed to 50° C. Afterstirring for 2 h, the reaction was allowed to cool to RT and theheterogeneous mixture is plugged a short pad of CELITE®. The filtratewas diluted with EtOAc and 100 mL of a 1 M aq. solution of HCl. Theacidic aqueous solution dissolved all of the cobalt salts (color changefrom dark brown to light pink). The pH of the aqueous layer was adjustedto pH=7 with a 1.0 M aq. solution of NaOH. The organic layer was thenseparated and the aqueous phase was extracted with EtOAc (3×). Thecombined organic phases were washed with brine, dried over sodiumsulfate, and concentrated under vacuum to afford crude Intermediate A86E(0.213 g, 100%) as an oil. MS(ES): m/z=273.9 [M+H₂O-OtBu]⁺. ¹H NMR (400MHz, chloroform-d) δ ppm 7.74-7.85 (1H, m), 7.59-7.69 (1H, m), 7.21-7.34(1H, m), 6.98-7.06 (1H, m), 3.06 (2H, s), 1.54-1.63 (9H, m), 1.29-1.42(4H, m), 1.08-1.16 (2H, m).

Intermediate A86F:2′-(3-Chlorophenyl)-5′,6′-dihydro-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazin]-4′-one

To a solution of Intermediate A86E (0.213 g, 0.612 mmol) in EtOH (5.0mL) was added ammonium hydroxide (0.954 mL, 24.5 mmol, 40 wt %). Thesolution was allowed to stir at RT for 18 h. The crude reaction mixturewas concentrated under reduced pressure and diluted with EtOAc. Theaqueous solution was neutralized to pH=7 using a 1M aq. solution of HCl.The organic layer was separated and the aqueous layer was extractedtwice more with EtOAc. The combined organic layers were washed withbrine, dried over sodium sulfate, and concentrated to affordIntermediate A86F (0.118 g, 69%) as a white solid. MS(ES): m/z=273.9[M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.80-7.84 (1H, m), 7.65(1H, dt, J=7.34, 1.47 Hz), 7.28-7.37 (2H, m), 7.15-7.19 (1H, m), 6.59(1H, br. s.), 3.68-3.74 (2H, m), 1.71-1.77 (2H, m), 1.08-1.15 (2H, m).

Intermediate A86G:2′-(3-Chlorophenyl)-5′,6′-dihydro-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]

A solution of Intermediate A86F (0.166 g, 0.606 mmol) in anhydrous THF(6.1 mL) placed under an atmosphere of N₂ was allowed to cool to −5° C.A 1.0 M solution of LAH (1.456 mL, 1.456 mmol) in THF was addeddropwise. The ice bath was removed once the bubbling had subsided. Thereaction was then allowed to warm to RT and stirred for an additional 18h. The reaction mixture was cooled to 0° C. and carefully quenched withthe sequential addition of 1.5 mL of H₂O, 1.5 mL of a 15% aq. solutionof NaOH, and 4.5 mL of H₂O. The cooling bath was removed and thebiphasic mixture was allowed to stir at RT for 30 min. Anhydrous MgSO₄was added to the mixture and was stirred for 15 min. The reactionmixture was then filtered through pad of CELITE®. The filter cake waswashed with DCM (2×20 mL). The organic layer of the filtrate wasseparated and the aqueous layer was extracted with 2×50 mL of DCM. Thecombined organic layers were washed with brine, dried over sodiumsulfate, and concentrated in vacuo to provide a pale green oil. Thecrude reaction mixture was purified by silica gel chromatography (40 gREDISEP® column, eluting with a gradient from 50-100% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A86G (0.115 g, 73%) as a white solid. MS(ES): m/z=260.0[M+H]⁺.

Intermediate A86H: tert-Butyl2′-(3-chlorophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a vial charged with a solution of Intermediate A86G (0.175 g, 0.674mmol) in DCM (4 mL) were added triethylamine (0.376 mL, 2.70 mmol) andDMAP (4.12 mg, 0.034 mmol). To the resulting solution was addeddi-tert-butyl dicarbonate (221 mg, 1.011 mmol). After stirring at RT for16 h, the reaction was quenched by the addition of 20 mL of a saturatedaq. solution of NaHCO₃. The layers were separated, and the aqueous layerwas washed twice more with DCM. The combined organic layers were washedwith water and brine, then dried over sodium sulfate, and concentratedin vacuo. The crude reaction mixture was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient from 0 to40% EtOAc in hexanes). Fractions containing the product were combinedand evaporated to afford Intermediate A86H (0.240 g, 99%) as a colorlessoil. MS(ES): m/z=360.08 [M+H]. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.75(1H, t, J=1.76 Hz), 7.61 (1H, d, J=7.53 Hz), 7.21-7.34 (2H, m), 6.35(1H, s), 4.80 (2H, br. s.), 3.81 (2H, s), 1.63-1.69 (2H, m), 1.50-1.54(9H, m), 0.95-1.08 (2H, m).

Intermediate A86I: tert-Butyl2′-(3-chlorophenyl)-3′-iodo-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a stirring solution of Intermediate A86H (241 mg, 0.670 mmol) in DCM(5.4 mL) and MeOH (1.4 mL) at RT was added NIS (452 mg, 2.009 mmol).After 1 h, the volatiles were removed under reduced pressured and thered oil was purified by silica gel chromatography (24 g REDISEP® column,eluting with a gradient from 0-25% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A86I (0.270 g, 83%) as a white foam. MS(ES): m/z=485.8[M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.78-7.82 (1H, m), 7.73(1H, dt, J=6.59, 1.98 Hz), 7.32-7.37 (2H, m), 4.59-4.76 (2H, m), 3.82(2H, br. s.), 1.65 (2H, s), 1.52 (9H, s), 1.04 (2H, br. s.).

Intermediate A86J: tert-Butyl7′-(3-chlorophenyl)-8′-cyano-1′H-spiro[cyclopropane-1,4′-pyrrolo[1,2-a]pyrazine]-2′(3′H)-carboxylate

To a flask charged with Intermediate A861 (267.4 mg, 0.550 mmol), wereadded Pd(Ph₃P)₄ (63.6 mg, 0.055 mmol), dicyanozinc (71.1 mg, 0.606mmol), and zinc (7.20 mg, 0.110 mmol). The flask was sealed with aseptum and the contents were degassed with N₂ for 5 min. DMF (2.4 mL)was added and the yellow solution was degassed for an additional 5 min.The reaction mixture was then allowed to heat to 80° C. After 2 h, thereaction mixture was diluted with equal parts water and EtOAc. Theorganic layer was separated and the aqueous phase was extracted (3×50mL) with EtOAc. The combined organic layers were washed with brine,dried over sodium sulfate, and concentrated in vacuo. The crude reactionmixture was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 25-60% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A86J (0.186 g, 86%) as a white solid. MS(ES): m/z=385.0[M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.89 (1H, d, J=1.00 Hz),7.81-7.86 (1H, m), 7.29-7.40 (2H, m), 4.92 (2H, br. s.), 3.84 (2H, s),1.66-1.71 (2H, m), 1.52 (9H, s), 1.10 (2H, d, J=2.51 Hz).

Intermediate A86K: tert-Butyl8′-carbamoyl-7′-(3-chlorophenyl)-1′H-spiro[cyclopropane-1,4′-pyrrolo[1,2-a]pyrazine]-2′(3′H)-carboxylate

To a solution of Intermediate A86J (0.145 g, 0.377 mmol) in DMSO (2 mL)at RT was added dropwise a 5 M aq. solution of KOH (0.38 mL, 1.884 mmol)followed by a 30 wt % solution of H₂O₂(0.77 mL, 0.754 mmol). Thereaction was allowed to stir at RT for 3 h after which the mixture waspartitioned between equal parts EtOAc and water. The organic phase wasseparated and the aqueous layer was extracted twice more with EtOAc. Thecombined organic layers were washed with brine, dried over MgSO₄,filtered and the filtrate concentrated under reduced pressure to afforda white solid. The crude reaction mixture was purified by silica gelchromatography (40 g REDISEP® column, eluting with a gradient from75-100% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A86K (0.117 g, 42%) as awhite solid. MS(ES): m/z=403.08 [M+H]⁺. ¹H NMR (400 MHz, chloroform-d) δppm 8.67 (2H, br. s.), 7.35-7.58 (4H, m), 5.31-6.03 (2H, m), 4.96-5.15(2H, m), 3.82 (2H, s), 1.59-1.69 (2H, m), 1.42-1.57 (9H, m), 0.94-1.17(2H, m).

Compound A86:2′-(3-Chlorophenyl)-N^(5′)-(4-cyanophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-3′,5′(6′H)-dicarboxamide

Compound A86 was synthesized analogous to Compound A76 by reactingdeprotected A86K with 4-isocyanatobenzonitrile. The product was purifiedby preparative HPLC (0.0224 g, 54%): MS(ES): m/z=447.2 [M+H]⁺; HPLC Ret.Time 1.80 min and 2.60 min. (Methods H and I respectively); ¹H NMR (500MHz, DMSO-d₆) δ ppm 9.35 (1H, s), 7.56-7.77 (6H, m), 7.35-7.46 (2H, m),7.23 (1H, br. s.), 5.03 (2H, s), 3.95-4.06 (2H, m), 1.42-1.53 (2H, m),1.10-1.19 (2H, m).

Intermediate A87A: Ethyl1-(cyanomethyl)-3-(3-fluorophenyl)-1H-pyrazole-5-carboxylate

To an ice-cooled solution of Intermediate 4B (7.0 g, 29.9 mmol) in DMF(45 mL), was added dropwise a solution of LiHMDS (31.4 mL, 31.4 mmol, 1Min THF). The reaction mixture is allowed to stir for 5 min. and the icebath is subsequently removed. 2-Chloroacetonitrile (2.482 g, 32.9 mmol)was added to the reaction mixture. The reaction was allowed to warm toRT and stirred for 18 h. The reaction was quenched by the addition of 1mL of a satd. aq. solution of NH₄Cl. The reaction was diluted with equalparts water and EtOAc and the resulting mixture was allowed to stirvigorously for 15 min. The organic layer was separated, dried oversodium sulfate, and concentrated in vacuo. The crude reaction mixturewas purified by silica gel chromatography (120 g REDISEP® column,eluting with a gradient from 0-40% EtOAc in hexanes). Fractionscontaining the product were combined and concentrated to affordIntermediate A87A (6.15 g, 75%) as a white solid. MS(ES) m/z=274 [M+H]⁺.

Intermediate A87B: Ethyl1-(1-cyanocyclopropyl)-3-(3-fluorophenyl)-1H-pyrazole-5-carboxylate

To an ice-cooled solution of Intermediate A87A (3.75 g, 13.72 mmol) and1-bromo-2-chloroethane (2.362 g, 16.47 mmol) in DMF (40 mL) was addedNaH (1.372 g, 34.3 mmol) (60% dispersion in mineral oil) portionwise.The cloudy solution was allowed to slowly warm to RT and stirred for 16h. The reaction mixture was quenched by the addition of 10 mL ofsaturated aq. solution of NH₄Cl. The mixture was partitioned in amixture of water and EtOAc. The organic layer was separated, washed withbrine, dried over sodium sulfate, and concentrated in vacuo. The crudeorange oil was purified by silica gel chromatography (80 g REDISEP®column, eluting with a gradient from 0-40% EtOAc in hexanes). Fractionscontaining the product were combined and concentrated to affordIntermediate A87B (0.51 g, 12%) as a yellow solid. MS(ES) m/z=300[M+H]⁺.

Intermediate A87C:2′-(3-Fluorophenyl)-5′,6′-dihydro-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazin]-4′-one

To an ice-cooled solution of Intermediate A87B (0.4 g, 1.336 mmol) andcobalt(II) chloride (0.521 g, 4.01 mmol) in MeOH (50 mL) was slowlyadded sodium borohydride (0.506 g, 13.36 mmol). The solution instantlyturned black with vigorous gas evolution. The reaction was heated to 50°C. for 2 h. The reaction mixture was filtered through CELITE® and thefiltrate was concentrated. The crude reaction mixture was purified bysilica gel chromatography (24 g REDISEP® column, eluting with a gradientfrom 0-40% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A87C (0.16 g, 47%).MS(ES) m/z=258 [M+H]⁺.

Intermediate A87D:2′-(3-Fluorophenyl)-5′,6′-dihydro-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]

To a stirred solution of Intermediate A87C (0.16 g, 0.622 mmol) in THF(10 mL) under an atmosphere of nitrogen at −10° C. was added dropwise a1.0 M solution of LAH (1.87 mL, 1.87 mmol) in THF. The reaction wasallowed to slowly reach RT and stir overnight, and was then heated at50° C. for 4 h. The reaction was quenched by slow addition of asaturated aq. solution of Rochelle's salt at 0° C. The mixture wasdiluted with DCM, the organic layer was separated, and the aqueous layerwas extracted with DCM (2×100 mL). The combined organic layers werewashed with brine, dried (MgSO₄) and concentrated to obtain IntermediateA87D (0.14 g, 93% yield) as an off-white solid. The product was used assuch without further purification. MS(ES) m/z=244 [M+H]⁺.

Intermediate A87E: tert-Butyl2′-(3-fluorophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A87D (0.14 g, 0.575 mmol) in MeOH (5 mL)were added TEA (0.289 mL, 2.072 mmol) and di-tert-butyl dicarbonate(0.188 g, 0.863 mmol). The solution was allowed to stir overnight at RT.It was concentrated and purified by silica gel chromatography (24 gREDISEP® column, eluting with a gradient from 0-30% EtOAc in hexanes).Fractions containing the product were combined and concentrated toafford Intermediate A87E (0.156 g, 79% yield). MS(ES) m/z=344 [M+H]⁺.

Intermediate A87F: tert-Butyl2′-(3-fluorophenyl)-3′-iodo-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A87E (0.156 g, 0.454 mmol) in DCM (5 mL)and MeOH (1.25 mL) was added NIS (0.307 g, 1.363 mmol) and the reactionmixture was allowed to stir at RT. After stirring for 90 min., thesolution was concentrated in vacuo affording a red oil which waspurified by silica gel chromatography (24 g REDISEP® column, elutingwith a gradient from 0-30% EtOAc in hexanes). Fractions containing theproduct were combined and concentrated to afford Intermediate A87F (0.14g, 66% yield). MS(ES) m/z=470 [M+H]⁺.

Intermediate A87G: tert-Butyl3′-cyano-2′-(3-fluorophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A87F (0.14 g, 0.298 mmol) in DMF (10 mL)was added copper(I) cyanide (0.067 g, 0.746 mmol). The reaction mixturewas heated in a sealed tube at 120 OC for 16 h. The reaction mixture wascooled to RT and filtered. The filter cake was washed with EtOAc and thecombined filtrate was concentrated. The residue was purified by silicagel chromatography (24 g REDISEP® column, eluting with a gradient from0-40% EtOAc in hexanes). Fractions containing the product were combinedand concentrated to afford Intermediate A87G (0.091 g, 83% yield).MS(ES) m/z=369 [M+H]⁺.

Intermediate A87H: tert-Butyl3′-carbamoyl-2′-(3-fluorophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-5′(6′H)-carboxylate

To a solution of Intermediate A87G (0.091 g, 0.247 mmol) in EtOH (20 mL)at RT was added KOH (0.247 mL, 1.235 mmol). The reaction mixture wascooled to 0° C. prior to the dropwise addition of hydrogen peroxide(0.505 mL, 4.94 mmol, 30 wt %). The reaction mixture was allowed to warmto RT and stir overnight, then concentrated and the residue dissolved inEtOAc. The organic phase was washed with water and brine, and was thendried (MgSO₄) and concentrated. The residue was purified by silica gelchromatography (12 g REDISEP® column, eluting with a gradient from 0-20%MeOH in DCM). The required fractions were concentrated to obtainIntermediate A87H (0.075 g, 79% yield). MS(ES) m/z=387 [M+H]⁺.

Intermediate A87I:2′-(3-Fluorophenyl)-5′,6′-dihydro-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-3′-carboxamide,TFA

To a solution of intermediate A87H (0.085 g, 0.220 mmol) in DCM (5 mL)at RT was added TFA (0.085 mL, 1.100 mmol) and the mixture was stirredovernight. The reaction mixture was concentrated to obtain the TFA saltof intermediate A87I (0.063 g, 0.220 mmol, >98% yield). The yield wasassumed to be quantitative and the crude product was used as suchwithout purification. MS(ES) m/z=287 [M+H]⁺.

Compound A87:N⁵′-(4-Cyanophenyl)-2′-(3-fluorophenyl)-4′H-spiro[cyclopropane-1,7′-pyrazolo[1,5-a]pyrazine]-3′,5′(6′H)-dicarboxamide

To a solution of Intermediate A87I (0.055 g, 0.192 mmol) in DMF (2 mL)at RT under nitrogen were added DIPEA (0.168 mL, 0.961 mmol) and2-isocyanato-2-methylpropane (0.055 g, 0.384 mmol). The reaction mixturewas stirred for 1 h. The crude material was purified via preparativeHPLC. Fractions containing the desired product were combined andevaporated to obtain Compound A87 (8.4 mg, 10% yield). MS(ES) m/z=431.2[M+H]⁺; Ret. time=1.70 and 2.51 min. (Methods H and I respectively); ¹HNMR (500 MHz, DMSO-d₆) δ ppm 9.36 (s, 1H), 7.78-7.64 (m, 4H), 7.54-7.34(m, 4H), 7.20 (t, J=7.0 Hz, 2H), 5.04 (s, 2H), 4.02 (s, 2H), 1.53-1.43(m, 2H), 1.21-1.10 (m, 2H), 1.21-1.10 (m, 2H).

Intermediate A88A: tert-Butyl3-carbamoyl-7-formyl-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

A suspension of Intermediate A14G (0.421 g, 0.997 mmol) and NaHCO₃ (84mg, 0.997 mmol) in anhydrous DCM (5.0 mL) was allowed to cool to −30° C.for several minutes prior to the addition of Dess-Martin periodinane(0.508 g, 1.197 mmol). The reaction was maintained at −30° C. for 2 hafter which the temperature was allowed to gradually reach 22° C. Afterhaving stirred for 18 h, the reaction was diluted with DCM and asaturated aq. solution of NaHCO₃. The organic layer was separated andthe aqueous phase is extracted with DCM (3×10 mL). The combined organiclayers were washed with brine, dried over anhydrous MgSO₄, filtered andthe filtrate concentrated under reduced pressure. The crude reactionmixture was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 50-100% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A88A (0.200 g, 47%) as a white foam. MS(ES): m/z=364.9[M+H₂O-OtBu]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 9.62-9.78 (1H, m),5.81-6.83 (2H, m), 4.49-5.55 (4H, m), 3.58 (1H, d, J=11.80 Hz),1.39-1.50 (9H, m).

Intermediate A88B: tert-Butyl3-carbamoyl-7,7-bis(hydroxymethyl)-2-iodo-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A88A (0.200 g, 0.476 mmol) in MeOH (4.0mL) was added dropwise at RT an 85% aq. solution of KOH (2.380 mL, 4.76mmol) and a 37% w/w aq. solution of formaldehyde (0.886 mL, 11.90 mmol)in MeOH (1 mL). The reaction was allowed to stir at RT for 18 h afterwhich the mixture was partitioned between equal parts EtOAc and water.The organic phase was separated and the aqueous layer was extractedtwice more. The organic layers were combined, dried over sodium sulfate,and concentrated to provide the crude P3-hydroxy aldehyde intermediate.The crude material was dissolved in MeOH (2.0 mL) and treated with NaBH₄(0.036 g, 0.952 mmol). After stirring at RT for 1 h, the reactionmixture was partitioned between equal parts water and EtOAc. The organiclayer was separated and the aqueous phase was extracted twice more withEtOAc. The combined organic layers were dried over sodium sulfate,filtered, and concentrated to provide a crude colorless oil. The crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 50-100% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A88B (0.096 g, 45%) as a white solid. MS(ES): m/z=397.0[M+H₂O-OtBu]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 6.29-6.87 (1H, m),5.84-6.34 (1H, m), 4.85-5.03 (2H, m), 3.72-3.97 (5H, m), 3.58 (2H, br.s.), 1.42-1.52 (9H, m).

Intermediate A88C: tert-Butyl3-carbamoyl-7-(hydroxymethyl)-2-iodo-7-((tosyloxy)methyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a stirring solution of Intermediate A88B (0.095 g, 0.210 mmol) anddibutyltin oxide (0.0261 g, 0.105 mmol) in DCM (1.0 mL) at RT was addedtriethylamine (0.029 mL, 0.210 mmol) followed by p-toluenesulfonylchloride (0.040 g, 0.210 mmol). After 24 h, the reaction mass wasfiltered and concentrated. The crude reaction mixture was purified bysilica gel chromatography (24 g REDISEP® column, eluting with a gradientfrom 50-100% EtOAc in hexanes). Fractions containing the product werecombined and evaporated to afford Intermediate A88C (0.033 g, 26%) as awhite foam. MS(ES): m/z=550.9 [M+H₂O-OtBu]⁺.

Intermediate A88D: tert-Butyl3′-carbamoyl-2′-iodo-4′H-spiro[oxetane-3,7′-pyrazolo[1,5-a]pyrazine-5′(6′H)-carboxylate

To an ice-cooled solution of Intermediate A88C (0.033 g, 0.054 mmol) inTHF (1.0 mL) was added NaH (0.005 g, 0.136 mmol, 60% dispersion inmineral oil). The reaction was allowed to stir at 0° C. for 30 min.prior to heating the mixture to 50° C. for 1 h. The reaction was allowedto cool to RT, diluted with EtOAc, and quenched with a saturated aq.solution of NH₄Cl. The organic layer was separated and the aqueous phasewas extracted twice with EtOAc. The combined organic phases were driedover sodium sulfate and concentrated under reduced pressure to afford anoil which was purified by silica gel chromatography (12 g REDISEP®column, eluting with a gradient from 50-100% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A88D (0.018 g, 76%) as a white solid. MS(ES): m/z=379.0[M+H₂O-OtBu]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 6.43-6.90 (1H, m),5.38-5.70 (1H, m), 5.19-5.29 (2H, m), 4.87-4.99 (2H, m), 4.61 (2H, d,J=6.78 Hz), 4.07-4.23 (2H, m), 1.41-1.55 (9H, m).

Intermediate A88E: tert-Butyl3′-carbamoyl-2′-(3-chloro-4-fluorophenyl)-4′H-spiro[oxetane-3,7′-pyrazolo[1,5-a]pyrazine-5′(6′H)-carboxylate

To a pressure vial equipped with a stir bar and charged withIntermediate A88D (0.018 g, 0.041 mmol) were added(3-chloro-4-fluorophenyl)boronic acid (10.8 mg, 0.062 mmol) andPdCl₂(dppf) (3.03 mg, 4.15 μmol). The reaction vial was capped andpurged with dry N₂ for 5 minutes. Anhydrous 1,4-dioxane (1.0 mL) and a2M aq. solution of K₃PO₄ (0.062 mL, 0.124 mmol) were added. Theresulting red slurry was allowed to heat to 80° C. for 18 h under a N₂atmosphere. The reaction was allowed to cool to RT and quenched by theaddition of 50 mL of water followed by dilution with DCM. The organicphase was separated and the aqueous phase was extracted twice more withadditional DCM. The combined organic layers were washed with a brinesolution, dried over sodium sulfate, and concentrated in vacuo toprovide a colorless oil which was purified by silica gel chromatography(12 g REDISEP® column, eluting with a gradient of 30-100% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A88E (0.017 g, 84%) as a white foam. MS(ES):m/z=437.0 [M+H]⁺.

Compound A88:2′-(3-Chloro-4-fluorophenyl)-N^(5′)-(4-cyanophenyl)-4′H-spiro[oxetane-3,7′-pyrazolo[1,5-a]pyrazine]-3′,5′(6′H)-dicarboxamide

Compound A88 was synthesized analogous to Compound A76 by reactingdeprotected A88E with 4-isocyanatobenzonitrile. The product was purifiedby preparative HPLC. MS(ES): m/z=480.9 [M+H]⁺; HPLC Ret. Time 1.58 minand 2.82 min. (Methods H and I respectively); ¹H NMR (500 MHz, DMSO-d₆)δ ppm 7.92 (1H, d, J=7.34 Hz), 7.63-7.79 (5H, m), 7.51 (1H, t, J=8.99Hz), 7.23-7.47 (2H, m), 5.04-5.14 (2H, m), 4.86-4.99 (2H, m), 4.64-4.73(2H, m), 4.26-4.44 (2H, m).

Intermediate A89A: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7,7-bis(hydroxymethyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A14H (0.425 g, 1.005 mmol) in MeOH (5.0mL) at RT was added dropwise an 85% aq. solution of KOH (5.03 mL, 10.05mmol) and a 37% w/w aq. solution of formaldehyde (1.871 mL, 25.1 mmol)in MeOH (1 mL). The reaction was allowed to stir at RT for 18 h afterwhich the mixture was partitioned between equal parts EtOAc and water.The organic phase was separated and the aqueous layer was extractedtwice more. The combined organic layers were dried over sodium sulfate,and concentrated to provide the crude P3-hydroxy aldehyde intermediate.The crude material was dissolved in MeOH (2.0 mL) and treated with NaBH₄(0.076 g, 2.010 mmol). After stirring at RT for 1 h, the reactionmixture was partitioned in equal parts water and EtOAc. The organiclayer was separated and the aqueous phase was extracted twice more withEtOAc. The combined organic layers were dried over sodium sulfate,filtered, and concentrated to provide a crude colorless oil. The crudeproduct was purified by silica gel chromatography (40 g REDISEP® column,eluting with a gradient from 60-100% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A89A (0.210 g, 46%) as a white solid. MS(ES): m/z=399.0[M+H₂O-OtBu]⁺. ¹H NMR (400 MHz, chloroform-d) δ ppm 7.64 (1H, ddd,J=7.84, 7.09, 2.13 Hz), 7.40-7.52 (1H, m), 7.23-7.32 (2H, m), 5.33-5.61(1H, m), 4.97 (2H, s), 4.70-4.82 (1H, m), 3.70-4.06 (6H, m), 3.26-3.52(2H, m), 1.50-1.56 (9H, m).

Intermediate A89B: tert-Butyl3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7,7-bis((tosyloxy)methyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To an ice-cooled solution of Intermediate A89A (0.210 g, 0.462 mmol) inTHF (5.0 mL) was added NaH (0.0739 g, 0.210 mmol, 60% dispersion inmineral oil) portionwise. After 10 minutes, a solution ofp-toluenesulfonyl chloride (0.264 g, 1.385 mmol) in THF was addeddropwise at 0° C. The reaction was then allowed to warm to 22° C. After18 h, the reaction was quenched at 0° C. with a saturated aq. solutionof NH₄Cl and diluted with EtOAc. The organic layer was separated and theaqueous phase was extracted twice more with EtOAc. The combined organiclayers were dried over sodium sulfate, filtered, and concentrated toafford a colorless oil which was purified by silica gel chromatography(40 g REDISEP® column, eluting with a gradient from 40-100% EtOAc inhexanes). Fractions containing the product were combined and evaporatedto afford Intermediate A89B (0.183 g, 52%) as a white solid. MS(ES):m/z=707.2 [M+H₂O-OtBu]⁺.

Intermediate A89C: tert-Butyl7-(azidomethyl)-3-carbamoyl-2-(3-chloro-4-fluorophenyl)-7-((tosyloxy)methyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate

To a solution of Intermediate A89B (0.092 g, 0.121 mmol) in DMF (2.0 mL)was added sodium azide (9.40 mg, 0.145 mmol). The reaction was allowedto heat at 80° C. for 18 h followed by 20 h at 100° C. The mixture wasallowed to cool to RT and partitioned between equal parts EtOAc andwater. The aqueous layer was extracted twice more with EtOAc and thecombined organic layers are washed with brine, dried over sodiumsulfate, filtered, and concentrated to afford the crude material as acolorless oil which was purified by silica gel chromatography (40 gREDISEP® column, eluting with a gradient from 0-30% EtOAc in hexanes).Fractions containing the product were combined and evaporated to affordIntermediate A89C (0.029 g, 38%) as a white solid. MS(ES): m/z=578.1[M+H₂O-OtBu]⁺.

Intermediate A89D: tert-Butyl1-acetyl-3′-carbamoyl-2′-(3-chloro-4-fluorophenyl)-4′H-spiro[azetidine-3,7′-pyrazolo[1,5-a]pyrazine-5′(6′H)-carboxylate

To a solution of Intermediate A89C (29 mg, 0.046 mmol) in THF were addedtriphenylphosphine (13.20 mg, 0.050 mmol) and water (0.824 μL, 0.046mmol). After stirring for 18 h at RT there was complete conversion tothe iminophosphorane. The hydrolysis of the iminophosphorane isaccomplished by treating the crude reaction mixture with NH₄OH (0.030mL, 0.229 mmol, 40 wt %) at RT. After stirring for 2 h, the reactionmixture was allowed to heat to 40° C. for 2 h, after which the volatileswere removed under reduced pressure. The Intermediate crude azetidinewas then acylated without purification. The crude oil was dissolved inDCM (0.50 mL) and treated with TEA (0.024 mL, 0.174 mmol) and a 1.0 Msolution of acetyl chloride (0.065 mL, 0.065 mmol) in DCM. The reactionwas allowed to stir at RT for 1 h after which the reaction mixture wasdiluted with equal parts EtOAc and water and the aqueous phase isextracted twice more with EtOAc. The combined organic layers were driedover sodium sulfate and concentrated under reduced pressure. The crudereaction mixture is purified by silica gel chromatography (24 g REDISEP®column, eluting with a gradient from 20-90% EtOAc in hexanes). Fractionscontaining the product were combined and evaporated to affordIntermediate A89D (0.0125 g, 48% over 3 steps) as a white solid. MS(ES):m/z=422.1 [M+H₂O-OtBu]⁺.

Compound A89:1-Acetyl-2′-(3-chloro-4-fluorophenyl)-N5′-(4-cyanophenyl)-4′H-spiro[azetidine-3,7′-pyrazolo[1,5-a]pyrazine]-3′,5′(6′H)-dicarboxamide

Compound A89 was synthesized analogous to Compound A76 by reactingdeprotected A89D with 2-isocyanato-2-methylpropane. The product waspurified by preparative HPLC. MS(ES): m/z=522.5 [M+H]⁺; HPLC Ret. Time1.31 min and 2.22 min. (Methods H and I respectively); ¹H NMR (500 MHz,DMSO-d₆) δ ppm 7.85-7.93 (1H, m), 7.63-7.78 (5H, m), 7.39-7.56 (2H, m),7.21-7.38 (1H, m), 4.89-5.03 (2H, m), 4.55-4.64 (1H, m), 4.39 (1H, d,J=8.80 Hz), 4.20-4.34 (3H, m), 4.09-4.18 (1H, m), 1.88 (3H, s).

1. A compound according to Formula (I):

or a pharmaceutically acceptable salt thereof, wherein: X isindependently selected from O and NH; R₁ is independently selected fromcarbocyclyl substituted with 1-5 R₅, and heterocyclyl comprising carbonatoms and 1 to 3 heteroatoms selected from N, NR₄, O, S, and substitutedwith 1-5 R₅; R₂ is independently selected from aryl substituted with 1-8R₇ and heteroaryl comprising carbon atoms and 1 to 4 heteroatomsselected from N, NR₆, O, S, and substituted with 1-8 R₇; R_(3a), R_(3b),R_(3c), R_(3d), R_(3e) and R_(3f) are independently selected from H, CN,C₁₋₄alkyl substituted with 1-3 R₈, —C(═O)OR_(b), —C(═O)NR_(a)R_(a),—C(═O)R_(b), —NR_(a)C(═O)R_(b), —NR_(a)C(═O)OR_(b),—(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈, and—(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈; alternatively, R_(3a)and R_(3b), or R_(3c) and R_(3d), or R_(3e) and R_(3f), together withthe carbon atom to which they are both attached form a spiralcarbocyclic or heterocyclic ring comprising carbon atoms and 1 to 4heteroatoms selected from N, O, S, each substituted with 1-5 R₈;alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form aheterocyclic ring comprising carbon atoms and 1 to 4 heteroatomsselected from N, O, S, and substituted with 1-5 R₈; R₄ is independentlyselected from H, C₁₋₄ alkyl substituted with 0-3 R_(e), —(CH₂)_(r)CN,—(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c), —(CH₂)_(r)C(═O)R_(b),—(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),—(CH₂)_(r)NR_(a)C(═O)R_(b), —(CH₂)_(r)NR_(a)C(═O)OR_(b),—(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a),—(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),—(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂R_(c),(CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and—(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e); R₅, at eachoccurrence, is independently selected from H, C₁₋₄ alkyl substitutedwith 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b), —(CH₂)_(r)CN,—(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c), —(CH₂)_(r)C(═O)R_(b),—(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),—(CH₂)_(r)NR_(a)C(═O)R_(b), —(CH₂)_(r)NR_(a)C(═O)OR_(b),—(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a),—(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),—(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂R_(c),(CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and—(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e); R₆ is independentlyselected from H, —C(═O)R_(b), —CO(═O)R_(b), —S(O)_(p)R_(c), C₁₋₆ alkylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); R₇,at each occurrence, is independently selected from H, F, Cl, Br,—(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),—C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),—NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),—NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted with0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with 0-5R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5 R_(e);R₈, at each occurrence, is independently selected from H, F, Cl, Br, CN,C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆ alkynyl,—(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-arylsubstituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5R_(e), CO₂H, —(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at eachoccurrence, is independently selected from H, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); R_(b), ateach occurrence, is independently selected from H, C₁₋₆ alkylsubstituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e),C₂₋₆ alkynyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclylsubstituted with 0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with0-5 R_(e); R_(c), at each occurrence, is independently selected fromC₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5R_(e), C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, andheterocyclyl; R_(d), at each occurrence, is independently selected fromH and C₁₋₄alkyl substituted with 0-5 R_(e); R_(e), at each occurrence,is independently selected from F, Cl, Br, CN, NO₂, ═O, C₁₋₆ alkylsubstituted with 0-5 R_(f), C₂₋₆ alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆cycloalkyl, —(CH₂)_(r)-aryl, —(CH₂)_(r)-heterocyclyl, CO₂H,—(CH₂)_(r)OR_(f), SR_(f), and —(CH₂)_(r)NR_(f)R_(f); R_(f), at eachoccurrence, is independently selected from H, C₁₋₅ alkyl optionallysubstituted with F, Cl, Br, C₃₋₆ cycloalkyl, and phenyl, or R_(f) andR_(f) together with the nitrogen atom to which they are both attachedform a heterocyclic ring optionally substituted with C₁₋₄alkyl; p, ateach occurrence, is independently selected from zero, 1, and 2; and r,at each occurrence, is independently selected from zero, 1, 2, 3, and 4.2. The compound according to claim 1, having Formula (II):

or a pharmaceutically acceptable salt thereof, wherein: R₁ isindependently selected from aryl substituted with 1-4 R₅, and 5- to12-membered heteroaryl comprising carbon atoms and 1 to 3 heteroatomsselected from N, NR₄, O, S, and substituted with 1-4 R₅; R₂ isindependently selected from aryl substituted with 1-8 R₇ and heteroarylcomprising carbon atoms and 1 to 4 heteroatoms selected from N, NR₆, O,S, and substituted with 1-8 R₇; R_(3a), R_(3b), R_(3c), and R_(3d) areindependently selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,—C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),—NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₅, and—(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈; alternatively, R_(3a)and R_(3b), or R_(3c) and R_(3d), or R_(3e) and R_(3f), together withthe carbon atom to which they are both attached form a spiralcarbocyclic or heterocyclic ring comprising carbon atoms and 1 to 4heteroatoms selected from N, O, S, each substituted with 0-5 R_(e);alternatively, R_(3a) and R_(3c) or R_(3b) and R_(3d) together form aheterocyclic ring comprising carbon atoms and 1 to 4 heteroatomsselected from N, O, S, and substituted with 0-5 R_(e); R₄ isindependently selected from H and C₁₋₄ alkyl substituted with 0-3 R_(e);R₅, at each occurrence, is independently selected from H, C₁₋₄ alkylsubstituted with 0-3 R_(e), F, Cl, Br, ═O, CN, NO₂, —OR_(b),—(CH₂)_(r)CN, —(CH₂)_(r)OR_(b), (CH₂)_(r)S(O)_(p)R_(c),—(CH₂)_(r)C(═O)R_(b), —(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),—(CH₂)_(r)NR_(a)C(═O)R_(b), —(CH₂)_(r)NR_(a)C(═O)OR_(b),—(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NR_(a)C(═O)NR_(a)R_(a),—(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),—(CH₂)_(r)NR_(a)S(O)₂NR_(a)R_(a), —(CH₂)_(r)NR_(a)S(O)₂R_(c),(CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and—(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e); R₆ is independentlyselected from H, —C(═O)R_(b), —CO(═O)R_(b), —S(O)_(p)R_(c), C₁₋₆ alkylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); R₇,at each occurrence, is independently selected from H, F, Cl, Br,—(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),—C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),—NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),—NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted with0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with 0-5R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5 R_(e);R₈, at each occurrence, is independently selected from H, F, Cl, Br, CN,C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆ alkynyl,—(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-arylsubstituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5R_(e), CO₂H, —(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at eachoccurrence, is independently selected from H, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); R_(b), ateach occurrence, is independently selected from H, C₁₋₆ alkylsubstituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e),C₂₋₆ alkynyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclylsubstituted with 0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with0-5 R_(e); R_(c), at each occurrence, is independently selected fromC₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5R_(e), C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, andheterocyclyl; R_(d), at each occurrence, is independently selected fromH and C₁₋₄alkyl substituted with 0-5 R_(e); R_(e), at each occurrence,is independently selected from F, Cl, Br, CN, NO₂, ═O, C₁₋₆ alkylsubstituted with 0-5 R_(f), C₂₋₆ alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆cycloalkyl, CO₂H, —(CH₂)_(r)OR_(f), SR_(f), and —(CH₂)_(r)NR_(f)R_(f);R_(f), at each occurrence, is independently selected from H, C₁₋₅ alkyl,C₃₋₆ cycloalkyl, and phenyl, or R_(f) and R_(f) together with thenitrogen atom to which they are both attached form a heterocyclic ringoptionally substituted with C₁₋₄alkyl; p, at each occurrence, isindependently selected from zero, 1, and 2; and r, at each occurrence,is independently selected from zero, 1, 2, 3, and
 4. 3. The compoundaccording to claim 2, wherein: R₁ is independently selected from aryl,pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, furyl, thienyl,imidazolyl, thiazolyl, indolyl, oxazolyl, isoxazolyl, pyrazolyl,triazolyl, tetrazolyl, indazolyl, 1,2,4-thiadiazolyl, isothiazolyl,quinolinyl, isoquinolinyl, each substituted with 1-4 R₄ and R₅; R₄, ateach occurrence, is independently selected from H and C₁₋₄ alkylsubstituted with 0-3 R_(e); R₅, at each occurrence, is independentlyselected from H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br, ═O,CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —CN, —OR_(b), —(CH₂)_(r)C(═O)R_(b),—(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),—(CH₂)_(r)NHC(═O)R_(b), —(CH₂)_(r)NHC(═O)OR_(b),—(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NHC(═O)NR_(a)R_(a),—(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),—(CH₂)_(r)NHS(O)₂NR_(a)R_(a), —(CH₂)_(r)NHS(O)₂R_(c),(CH₂)_(r)-carbocyclyl substituted with 0-3 R_(e), and—(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e); R_(a), at eachoccurrence, is independently selected from H, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); R_(b), ateach occurrence, is independently selected from H, C₁₋₆ alkylsubstituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e),C₂₋₆ alkynyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclylsubstituted with 0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with0-5 R_(e); R_(c), at each occurrence, is independently selected fromC₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5R_(e), C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, andheterocyclyl; R_(e), at each occurrence, is independently selected fromF, Cl, Br, CN, NO₂, ═O, C₁₋₆ alkyl substituted with 0-5 R_(f), C₂₋₆alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkyl, CO₂H,—(CH₂)_(r)OR_(f), SR_(f), and —(CH₂)_(r)NR_(f)R_(f); R_(f), at eachoccurrence, is independently selected from H, C₁₋₅ alkyl, C₃₋₆cycloalkyl, and phenyl, or R_(f) and R_(f) together with the nitrogenatom to which they are both attached form a heterocyclic ring optionallysubstituted with C₁₋₄alkyl; p, at each occurrence, is independentlyselected from zero, 1, and 2; and r, at each occurrence, isindependently selected from zero, 1, 2, 3, and
 4. 4. The compoundaccording to claim 3, wherein: R₁ is independently selected from

R₄, at each occurrence, is independently selected from H and C₁₋₄ alkylsubstituted with 0-3 R_(e); R₅, at each occurrence, is independentlyselected from H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br, ═O,CN, NO₂, —OR_(b), —S(O)_(p)R_(c), —CN, —OR_(b), —(CH₂)_(r)C(═O)R_(b),—(CH₂)_(r)NR_(a)R_(a), —(CH₂)_(r)C(═O)NR_(a)R_(a),—(CH₂)_(r)NHC(═O)R_(b), —(CH₂)_(r)NHC(═O)OR_(b),—(CH₂)_(r)OC(═O)NR_(a)R_(a), —(CH₂)_(r)NHC(═O)NR_(a)R_(a),—(CH₂)_(r)C(═O)OR_(b), —(CH₂)_(r)S(O)₂NR_(a)R_(a),—(CH₂)_(r)NHS(O)₂NR_(a)R_(a), —(CH₂)_(r)NHS(O)₂R_(c),(CH₂)_(r)—C₃₋₆cycloalkyl, —(CH₂)_(r)-aryl substituted with 0-3 R_(e),and —(CH₂)_(r)-heterocyclyl substituted with 0-3 R_(e); R_(a), at eachoccurrence, is independently selected from H, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); R_(b), ateach occurrence, is independently selected from H, C₁₋₆ alkylsubstituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e),C₂₋₆ alkynyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclylsubstituted with 0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with0-5 R_(e); R_(c), at each occurrence, is independently selected fromC₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5R_(e), C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, andheterocyclyl; R_(e), at each occurrence, is independently selected fromF, Cl, Br, CN, NO₂, ═O, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl,—(CH₂)_(r)—C₃₋₆ cycloalkyl, and CO₂H; p, at each occurrence, isindependently selected from zero, 1, and 2; and r, at each occurrence,is independently selected from zero, 1, 2, 3, and
 4. 5. The compoundaccording to claim 4, having Formula (III),

or a pharmaceutically acceptable salt thereof, wherein: R₂ isindependently selected from aryl substituted with 1-8 R₇ and heteroarylcomprising carbon atoms and 1 to 4 heteroatoms selected from N, NR₆, O,S, and substituted with 1-8 R₇; R_(3a), R_(3b), R_(3c), and R_(3d) areindependently selected from H, CN, C₁₋₄alkyl substituted with 1-3 R₈,—C(═O)OR_(b), —C(═O)NR_(a)R_(a), —C(═O)R_(b), —NR_(a)C(═O)R_(b),—NR_(a)C(═O)OR_(b), —(CH₂)_(r)-carbocyclyl substituted with 1-3 R₈, and—(CH₂)_(r)-heterocyclyl substituted with 1-3 R₈; alternatively, R_(3a)and R_(3b), or R_(3c) and R_(3d), together with the carbon atom to whichthey are both attached form a spiral carbocyclic or heterocyclic ringcomprising carbon atoms and 1 to 4 heteroatoms selected from N, O, S,each substituted with 1-5 R₈; alternatively, R_(3a) and R_(3c) or R_(3b)and R_(3d) together form a heterocyclic ring comprising carbon atoms and1 to 4 heteroatoms selected from N, O, S, and substituted with 1-5 R₈;R₅, at each occurrence, is independently selected from H, C₁₋₄ alkylsubstituted with 0-3 R_(e), F, Cl, Br, —S(O)_(p)R_(c), —CN, —OR_(b),NR_(a)R_(a), C₃₋₆cycloalkyl, aryl substituted with 0-3 R_(e), andheterocyclyl substituted with 0-3 R_(e); R₆ is independently selectedfrom H, —C(═O)R_(b), —CO(═O)R_(b), —S(O)_(p)R_(c), C₁₋₆ alkylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); R₇,at each occurrence, is independently selected from H, F, Cl, Br,—(CR_(d)R_(d))_(r)CN, NO₂, —(CR_(d)R_(d))_(r)OR_(b), —S(O)_(p)R_(c),—C(═O)R_(b), —(CR_(d)R_(d))_(r)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)NR_(a)R_(a), —NR_(a)C(═O)R_(b),—NR_(a)C(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NR_(a)C(═O)NR_(a)R_(a),—(CR_(d)R_(d))_(r)C(═O)OR_(b), —S(O)₂NR_(a)R_(a),—NR_(a)S(O)₂NR_(a)R_(a), —NR_(a)S(O)₂R_(c), C₁₋₆ alkyl substituted with0-5 R_(e), —(CR_(d)R_(d))_(r)—C₃₋₆carbocyclyl substituted with 0-5R_(e), and —(CR_(d)R_(d))_(r)-heterocyclyl substituted with 0-5 R_(e);R₈, at each occurrence, is independently selected from H, F, Cl, Br, CN,C₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆ alkynyl,—(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-arylsubstituted with 0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5R_(e), CO₂H, —(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at eachoccurrence, is independently selected from H, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); R_(b), ateach occurrence, is independently selected from H, C₁₋₆ alkylsubstituted with 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e),C₂₋₆ alkynyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclylsubstituted with 0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with0-5 R_(e); R_(c), at each occurrence, is independently selected fromC₁₋₆ alkyl substituted with 0-5 R_(e), C₂₋₆alkenyl substituted with 0-5R_(e), C₂₋₆alkynyl substituted with 0-5 R_(e), C₃₋₆carbocyclyl, andheterocyclyl; R_(d), at each occurrence, is independently selected fromH and C₁₋₄alkyl substituted with 0-5 R_(e); R_(e), at each occurrence,is independently selected from F, Cl, Br, CN, NO₂, ═O, CO₂H, C₁₋₆ alkylsubstituted with 0-5 R_(f), C₂₋₆ alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆cycloalkyl, —(CH₂)_(r)OR_(f), SR_(f), and —(CH₂)_(r)NR_(f)R_(f); R_(f),at each occurrence, is independently selected from H, C₁₋₅ alkyl, C₃₋₆cycloalkyl, and phenyl, or R_(f) and R_(f) together with the nitrogenatom to which they are both attached form a heterocyclic ring optionallysubstituted with C₁₋₄alkyl; p, at each occurrence, is independentlyselected from zero, 1, and 2; and r, at each occurrence, isindependently selected from zero, 1, 2, 3, and
 4. 6. The compoundaccording to claim 5, wherein: R₂ is

R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃, CH₂OH,CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃, CH₂OCHF₂, CH₂CN,CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂, C(CH₃)₂OH, C(CH₃)₂F,C(═O)NH—C₃₋₆cycloalkyl, C(═O)NH-heterocyclyl, and —CH₂-heterocyclyl,wherein the heterocyclyl is independently selected from

R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂, CF₃,and C₃₋₆ cycloalkyl; R₅, at each occurrence, is independently selectedfrom H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br,—S(O)_(p)R_(c), —CN, —OR_(b), NR_(a)R_(a), C₃₋₆cycloalkyl, and arylsubstituted with 0-3 R_(e); R₇, at each occurrence, is independentlyselected from H, F, Cl, Br, —(CH₂)_(r)CN, NO₂, —(CH₂)_(r)OR_(b),—S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a), —C(═O)NR_(a)R_(a),—NHC(═O)R_(b), —NHC(═O)OR_(b), —OC(═O)NR_(a)R_(a), —NHC(═O)NR_(a)R_(a),—C(═O)OR_(b), —S(O)₂NR_(a)R_(a), —NHS(O)₂NR_(a)R_(a), —NHS(O)₂R_(c),C₁₋₆ alkyl substituted with 0-5 R_(e), C₃₋₆cycloalkyl substituted with0-5 R_(e), aryl substituted with 0-5 R_(e), and heterocyclyl substitutedwith 0-5 R_(e); R₈, at each occurrence, is independently selected fromH, F, Cl, Br, CN, C₁₋₆ alkyl substituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆cycloalkyl substituted with 0-5 R_(e), —(CH₂)_(r)-aryl substituted with0-5 R_(e), —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e), CO₂H,—(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at each occurrence,is independently selected from H, CN, C₁₋₆ alkyl substituted with 0-5R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynyl substitutedwith 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e),and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) andR_(a) together with the nitrogen atom to which they are both attachedform a heterocyclic ring substituted with 0-5 R_(e); R_(b), at eachoccurrence, is independently selected from H, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R_(c), at each occurrence, isindependently selected from C₁₋₆ alkyl substituted with 0-5 R_(e),C₃₋₆carbocyclyl, and heterocyclyl; R_(e), at each occurrence, isindependently selected from F, Cl, Br, CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl,C₂₋₆ alkenyl, C₂₋₆ alkynyl, and —(CH₂)_(r)—C₃₋₆ cycloalkyl; p, at eachoccurrence, is independently selected from zero, 1, and 2; and r, ateach occurrence, is independently selected from zero, 1, 2, 3, and
 4. 7.The compound according to claim 5, wherein: R₂ is

R₇, at each occurrence, is independently selected from H, F, Cl, Br, CN,—OC₁₋₄alkyl substituted with 0-5 R_(e), —S(O)₂C₁₋₄alkyl, —C(═O)R_(b),—NR_(a)R_(a), —C(═O)NR_(a)R_(a), C₁₋₄ alkyl substituted with 0-5 R_(e),C₃₋₆cycloalkyl substituted with 0-5 R_(e), aryl substituted with 0-5R_(e), and heterocyclyl substituted with 0-5 R_(e); R_(a), at eachoccurrence, is independently selected from H, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with0-5 R_(e), and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); orR_(a) and R_(a) together with the nitrogen atom to which they are bothattached form a heterocyclic ring substituted with 0-5 R_(e); whereinthe heterocyclic ring is independently selected from

R_(e), at each occurrence, is independently selected from F, Cl, Br, CN,NO₂, ═O, CO₂H, C₁₋₆ alkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, and—(CH₂)_(r)—C₃₋₆ cycloalkyl.
 8. The compound according to claim 5,wherein: R₂ is independently selected from

R_(3a) and R_(3b) are independently selected from H, CH₂CH₃, CH₃, CH₂OH,CH₂CH₂OH, CH₂CH₂OC₁₋₄alkyl, CH₂F, CHF₂, CH₂CH₂F, CF₃, CH₂OCHF₂, CH₂CN,CH₂CH₂CN, CH₂OC₁₋₄alkyl, C(CH₃)₃, CH(CH₃)₂, C(CH₃)₂OH, C(CH₃)₂F,C(═O)NH—C₃₋₆cycloalkyl, C(═O)NH-heterocyclyl, and —CH₂-heterocyclyl,wherein the heterocyclyl is independently selected from

R_(3c) and R_(3d) are independently selected from H, CH₃, CH(CH₃)₂, CF₃,and C₃₋₆ cycloalkyl; R₅, at each occurrence, is independently selectedfrom H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br,—S(O)_(p)R_(c), —CN, —OR_(b), NR_(a)R_(a), C₃₋₆cycloalkyl, and arylsubstituted with 0-3 R_(e); R₆ is independently selected from H and C₁₋₆alkyl substituted with 0-5 R_(e); R₇, at each occurrence, isindependently selected from H, F, Cl, Br, —(CH₂)_(r)CN, NO₂,—(CH₂)_(r)OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a),—C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b), —OC(═O)NR_(a)R_(a),—NHC(═O)NR_(a)R_(a), —C(═O)OR_(b), —S(O)₂NR_(a)R_(a),—NHS(O)₂NR_(a)R_(a), —NHS(O)₂R_(c), C₁₋₆ alkyl substituted with 0-5R_(e), C₃₋₆cycloalkyl substituted with 0-5 R_(e), aryl substituted with0-5 R_(e), and heterocyclyl substituted with 0-5 R_(e); R₈, at eachoccurrence, is independently selected from H, F, Cl, Br, CN, C₁₋₆ alkylsubstituted with 0-5 R_(e), —(CH₂)_(r)—C₃₋₆ cycloalkyl substituted with0-5 R_(e), —(CH₂)_(r)-aryl substituted with 0-5 R_(e),—(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e), CO₂H,—(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at each occurrence,is independently selected from H, CN, C₁₋₆ alkyl substituted with 0-5R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynyl substitutedwith 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e),and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) andR_(a) together with the nitrogen atom to which they are both attachedform a heterocyclic ring substituted with 0-5 R_(e); R_(b), at eachoccurrence, is independently selected from H, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R_(c), at each occurrence, isindependently selected from C₁₋₆ alkyl substituted with 0-5 R_(e),C₃₋₆carbocyclyl, and heterocyclyl; R_(e), at each occurrence, isindependently selected from F, Cl, Br, CN, NO₂, ═O, CO₂H C₁₋₆ alkyl,C₂₋₆ alkenyl, C₂₋₆ alkynyl, and —(CH₂)_(r)—C₃₋₆ cycloalkyl; p, at eachoccurrence, is independently selected from zero, 1, and 2; and r, ateach occurrence, is independently selected from zero, 1, 2, 3, and
 4. 9.The compound according to claim 5, or a pharmaceutically acceptable saltthereof, wherein: R_(3a) and R_(3b), together with the carbon atom towhich they are both attached form a spiral carbocyclic or heterocyclicring comprising carbon atoms and 1 to 4 heteroatoms selected from N, O,S, each substituted with 1-5 R₈; and alternatively, R_(3c) and R_(3d),together with the carbon atom to which they are both attached form aspiral carbocyclic ring comprising carbon atoms and 1 to 4 heteroatomsselected from N, O, S, each substituted with 1-5 R₈.
 10. The compoundaccording to claim 9, having Formula (IV):

or a pharmaceutically acceptable salt thereof, wherein: Ring A isindependently selected from C₃₋₆cycloalkyl and heterocyclyl; R₂ isindependently selected from aryl substituted with 1-8 R₇ and heteroarylcomprising carbon atoms and 1 to 4 heteroatoms selected from N, O, S,and substituted with 1-8 R₇; R₅, at each occurrence, is independentlyselected from H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br,—S(O)_(p)R_(c), —CN, —OR_(b), NR_(a)R_(a), C₃₋₆cycloalkyl, arylsubstituted with 0-3 R_(e), and heterocyclyl substituted with 0-3 R_(e);R₇, at each occurrence, is independently selected from H, F, Cl, Br, CN,NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a),—C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b), —OC(═O)NR_(a)R_(a),—NHC(═O)NR_(a)R_(a), —C(═O)OR_(b), —S(O)₂NR_(a)R_(a), C₁₋₆ alkylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R₈, at each occurrence, isindependently selected from H, F, Cl, Br, CN, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl, C₂₋₆ alkynyl, —(CH₂)_(r)—C₃₋₆ cycloalkylsubstituted with 0-5 R_(e), —(CH₂)_(r)-aryl substituted with 0-5 R_(e),—(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e), CO₂H,—(CH₂)_(r)OR_(b), and —(CH₂)_(r)NR_(a)R_(a); R_(a), at each occurrence,is independently selected from H, CN, C₁₋₆ alkyl substituted with 0-5R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynyl substitutedwith 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e),and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) andR_(a) together with the nitrogen atom to which they are both attachedform a heterocyclic ring substituted with 0-5 R_(e); R_(b), at eachoccurrence, is independently selected from H, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R_(e), at each occurrence, isindependently selected from C₁₋₆ alkyl substituted with 0-5 R_(e),C₃₋₆carbocyclyl, and heterocyclyl; R_(e), at each occurrence, isindependently selected from F, Cl, Br, CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl,C₂₋₆ alkenyl, C₂₋₆ alkynyl, and —(CH₂)_(r)—C₃₋₆ cycloalkyl; p, at eachoccurrence, is independently selected from zero, 1, and 2; and r, ateach occurrence, is independently selected from zero, 1, 2, 3, and 4.11. The compound according to claim 5, or a pharmaceutically acceptablesalt thereof, wherein: R_(3a) and R_(3c) together form a carbocyclic orheterocyclic ring comprising carbon atoms and 1 to 4 heteroatomsselected from N, O, S, wherein the carbocyclic or heterocyclic ring issubstituted with 1-5 R₈; and R_(3b) and R_(3d) are independentlyselected from H and C₁₋₄alkyl.
 12. The compound according to claim 11,having Formula (V):

or a pharmaceutically acceptable salt thereof, wherein: R₂ isindependently selected from aryl substituted with 1-8 R₇ and heteroarylcomprising carbon atoms and 1 to 4 heteroatoms selected from N, O, S,and substituted with 1-8 R₇; R₅, at each occurrence, is independentlyselected from H, C₁₋₄ alkyl substituted with 0-3 R_(e), F, Cl, Br,—S(O)_(p)R_(c), —CN, —OR_(b), NR_(a)R_(a), C₃₋₆cycloalkyl, arylsubstituted with 0-3 R_(e), and heterocyclyl substituted with 0-3 R_(e);R₇, at each occurrence, is independently selected from H, F, Cl, Br, CN,NO₂, —OR_(b), —S(O)_(p)R_(c), —C(═O)R_(b), —NR_(a)R_(a),—C(═O)NR_(a)R_(a), —NHC(═O)R_(b), —NHC(═O)OR_(b), —OC(═O)NR_(a)R_(a),—NHC(═O)NR_(a)R_(a), —C(═O)OR_(b), —S(O)₂NR_(a)R_(a), C₁₋₆ alkylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R_(a), at each occurrence, isindependently selected from H, CN, C₁₋₆ alkyl substituted with 0-5R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynyl substitutedwith 0-5 R_(e), —(CH₂)_(r)—C₃₋₁₀carbocyclyl substituted with 0-5 R_(e),and —(CH₂)_(r)-heterocyclyl substituted with 0-5 R_(e); or R_(a) andR_(a) together with the nitrogen atom to which they are both attachedform a heterocyclic ring substituted with 0-5 R_(e); R_(b), at eachoccurrence, is independently selected from H, C₁₋₆ alkyl substitutedwith 0-5 R_(e), C₂₋₆ alkenyl substituted with 0-5 R_(e), C₂₋₆ alkynylsubstituted with 0-5 R_(e), aryl substituted with 0-5 R_(e), andheterocyclyl substituted with 0-5 R_(e); R_(c), at each occurrence, isindependently selected from C₁₋₆ alkyl substituted with 0-5 R_(e),C₃₋₆carbocyclyl, and heterocyclyl; R_(e), at each occurrence, isindependently selected from F, Cl, Br, CN, NO₂, ═O, CO₂H, C₁₋₆ alkyl,C₂₋₆ alkenyl, C₂₋₆ alkynyl, and —(CH₂)_(r)—C₃₋₆ cycloalkyl; p, at eachoccurrence, is independently selected from zero, 1, and 2; and r, ateach occurrence, is independently selected from zero, 1, 2, 3, and 4.13. A pharmaceutical composition comprising one or more compounds ofclaim 1 and a pharmaceutically acceptable carrier.
 14. A method ofinhibiting casein kinase Iδ/ε activity in a patient, comprisingadministering to the patient in need thereof, a therapeuticallyeffective amount of one or more compounds according to claim
 1. 15. Amethod for treating a disease, with the pathological conditions of whichthe activation of casein kinase Iδ/ε is associated, wherein the methodcomprises administering to a patient, a pharmaceutical compositioncomprising, as an active ingredient of one or more compounds accordingto claim 1, or the salt thereof, wherein the disease is selected from acircadian rhythm disorder, a neurodegenerative disease, and cancer.